How to get a baby to sleep through the night is a question with a hidden definition problem sitting inside it, and until you resolve that, the advice you find will not make sense. Here is the number that reframed it for me: Stanford Children's Health defines sleeping through the night as six to eight hours, and notes that most babies do not start doing it without waking until around three months old. Six to eight hours. Not twelve. If your baby goes down at 7pm and wakes at 2am, she has, by the clinical definition, slept through the night — and you have been awake since 2am and would not describe your night that way at all. That gap between the definition and the lived experience is where most of the frustration in this topic lives. The same sources add two more things worth knowing before you change anything. The American Academy of Pediatrics notes that babies do not have regular sleep cycles until about four months of age, and Stanford puts the arrival of regular cycles closer to six months — the two disagree, and I would rather tell you that than pretend at a precision nobody has. Either way, there is a floor below which no technique produces consolidated sleep, because the underlying architecture is not there yet. And Stanford adds a detail that saves a lot of despair: after a stretch of sleeping through, babies often begin waking again around six months. So this page is about the levers that genuinely move things, in rough order of how much work they do, and about the ones that get sold hard and deliver little. I am a mom who read a great deal of this, not a clinician, and where the answer is genuinely individual I will say so instead of inventing one.
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Six to eight hours, not twelve
Start by measuring against the actual definition rather than against a friend's account of her baby.
Stanford Children's Health frames sleeping through the night as six to eight hours without waking, arriving for most babies around three months. Under that definition, a 7pm bedtime and a 2am waking is a night slept through. Whether that feels like success is a separate question, and mostly a question about *your* sleep window rather than hers — a parent who goes to bed at 11pm gets three hours out of the same night that gives a parent who goes down at 9pm five.
That is not a trivial reframe. Moving your own bedtime earlier is, for many families, the single fastest improvement available, and it requires nothing from the baby at all. It is also the suggestion nobody wants, because those evening hours are frequently the only ones that feel like yours.
The other half of the measurement is total sleep. The AASM pediatric sleep duration consensus recommends that infants aged 4 to 12 months sleep 12 to 16 hours per 24 hours, including naps. That total is the number worth tracking, because a baby who is meeting it across the day and waking twice at night is in a different situation from one who is well short of it. The second one has a sleep-debt problem, and sleep debt makes night waking worse rather than better.
| What people mean by it | What it usually is |
|---|---|
| Twelve hours straight | Uncommon in the first year, and not the clinical definition |
| Six to eight hours unbroken | The definition Stanford uses; typical from around 3 months |
| No wakings ever | Not what happens; brief surfacings between cycles are normal |
| Resettles alone without needing you | The realistic goal for most of the first year |
There is a floor, and pushing on it does not help
Before four months or so, there is a limit to what any approach can do, and understanding why saves you from blaming yourself for a developmental timeline.
HealthyChildren.org notes that babies do not have regular sleep cycles until about four months of age, and that early on they may sleep only one to two hours at a time. Stanford puts regular cycles closer to six months. The sources differ; the implication does not. For the first several months, sleep is short, fragmented and biologically driven, and no routine will consolidate what has not yet organized itself.
This is worth saying because the newborn period is precisely when parents are most desperate and therefore most susceptible to being sold a system. What helps in those weeks is not a method. It is a dark, boring room, a rough sense of day versus night, feeding on demand, and dividing the nights with someone else if there is anyone to divide them with.
What you *can* usefully build early are habits that pay off later: a short consistent wind-down, putting her down in the same place, keeping night interactions dim and dull. None of that will make a six-week-old sleep eight hours. All of it makes the four-month version easier.
Drowsy but awake, which is easier said than done
If there is one behavioural lever with real weight behind it, this is it, and the AAP states it directly: “Put babies to bed when they are drowsy. Do not wait until babies are asleep.” The same guidance adds that babies need time to put themselves back to sleep, and that they need to learn how to fall back asleep on their own.
The logic is about continuity rather than discipline. Everyone surfaces between sleep cycles — adults included. What determines whether a surfacing becomes a wake-up is whether the conditions are the same as when you fell asleep. A baby who falls asleep on a moving shoulder and surfaces alone in a still crib has encountered a change, and reacts to it. A baby who fell asleep in the crib finds the crib, which is unremarkable.
In practice, drowsy-but-awake is much harder than it reads. Most babies do not present a clear window; they go from wired to asleep with about eleven seconds in between. What worked for a lot of families, and what I would suggest attempting rather than perfecting, is shifting the point of transfer gradually earlier over a week — a bit less asleep each night — rather than trying to go from fully-asleep-on-you to fully-awake-in-crib in one evening.
And if it does not take, it does not take. Plenty of babies eventually sleep long stretches having been rocked to sleep for months. It is a lever, not a law.
The wake window before bed does more than the routine does
This is the lever I would prioritize above bedtime rituals, room upgrades or anything you can buy, and it is the one most commonly overlooked because it happens hours before the problem shows up.
Overtiredness does not produce deeper sleep. It produces harder settling, more frequent surfacing and more crying at each cycle boundary — which is exactly the profile parents describe when they say their baby fights bedtime and then wakes every ninety minutes. The window immediately before bedtime is usually the longest of the day and the one most easily overshot, particularly on days when a late nap ran short or a nap got skipped entirely.
The correction is unglamorous: match the last wake window to her actual age, and treat a wrecked nap day as a reason to move bedtime earlier rather than later. An earlier bedtime after a bad nap day feels like giving up and is usually the thing that rescues the night.
Undershooting is possible too — a baby put down without enough awake time will treat bedtime as a nap and be up an hour later, cheerful. Our wake window calculator gives ranges by age, and if you are near the four-month mark, that stage deserves its own read because the schedule and the sleep-architecture change collide there. The by-age schedule guide shows the whole shape.
A wind-down that works when you are too tired to think
The value of a bedtime routine is not the activities. It is that the same sequence in the same order becomes a reliable signal, and signals work best when they are short enough to survive a bad evening. A forty-minute ritual is a nice idea that collapses the first night someone is ill or late home. Twenty to thirty minutes is more durable.
What matters is order and consistency, not content. Any sequence works if it is the same sequence. Keep the last step in the room where she will sleep, so the final thing she experiences before the crib is already the crib's environment.
Some things worth building in regardless of the specific steps: dim the lights meaningfully for the last stretch, keep the volume of the whole house down, and keep night wakings visually and socially boring — low light, minimal talking, no play. You are not being cold. You are keeping the difference between 2am and 7am legible.
And the sleep space itself stays exactly what safe-sleep guidance describes throughout all of this: on her back, on a firm flat surface, in a crib with a fitted sheet and nothing else. Sleep improvement never justifies changing that, and the products that promise better sleep in exchange for it are the ones to be most skeptical of.
- Keep it 20-30 minutes, not 45
- Same order every night; the order is the signal
- Finish in the room where she sleeps, with the lights already low
- Night wakings stay dim, quiet and dull — no play, minimal talk
- Crib stays bare: firm, flat, fitted sheet, on her back
Night feeds are not a question I can answer
This is where honest advice has to stop and hand over. Whether your baby still needs a feed at 2am depends on her age, weight, growth trajectory and how she feeds during the day — four things a website cannot see, and which your pediatrician can assess in about five minutes.
What I can offer is the framing. The AAP acknowledges attending to babies at night for real needs like feeding, a dirty diaper, or comfort when they are sick. Night feeds are not a habit to be broken; for a substantial part of the first year they are a nutritional requirement, and dropping them on a schedule found online is genuinely the wrong way to approach it.
What is worth examining, once your pediatrician has confirmed she no longer nutritionally needs the feed, is whether feeding has become the mechanism she uses to get back to sleep rather than the reason she woke. Those look identical at 2am. The distinguishing question is whether she feeds substantially or takes a few sucks and drops off — and even then, the transition away is something to plan with your pediatrician rather than from a page.
One thing I will say plainly: do not restrict daytime feeds to encourage longer nights. That is a suggestion that circulates and it is not a decision to make without medical input.
The six-month backslide is documented, not a failure
One of the more demoralizing experiences of the first year is getting a baby sleeping well and then watching it come apart. It is worth knowing in advance that this is described in the literature rather than being something you caused.
Stanford Children's Health notes that after babies begin sleeping through the night, they often start waking again at around six months. It also places the arrival of regular sleep cycles around that same age, which suggests the reorganization and the disruption are related rather than coincidental.
What tends to be happening around then is a pile-up: sleep architecture maturing, major motor skills arriving — sitting, crawling, pulling up, all of which get rehearsed at 3am — increased awareness of your absence, and a nap schedule that is due to change. Any one of those disrupts sleep. They rarely arrive one at a time.
The practical response is boring and correct: hold the structure, do not reinvent the system mid-disruption, expect a week or two, and adjust the schedule if a nap transition is genuinely due. The failure mode is changing approach every third night out of desperation, which removes the only variable that was helping. A pattern that persists for several weeks without improvement is worth raising at a well visit.
When it is still not working
Some babies do everything above and still wake, and I am not going to pretend a page can fix that. A few things worth considering when you are past the point of tips.
Rule out the physical. Persistent night waking that does not respond to schedule or environment changes is worth a pediatrician conversation — reflux, ear infections, allergies, breathing issues and iron status are all things that get raised, and none of them are things you should be diagnosing from a search result. Snoring, mouth breathing, pauses in breathing, or unusual sweating during sleep are specifically worth mentioning.
Check total sleep against the AASM figure of 12 to 16 hours per 24 for a 4-to-12-month-old, including naps. A baby well short of that has a sleep-debt problem that will keep undermining nights until the daytime side is fixed.
Audit the environment once, properly, in the dark: light leaking around blinds, a hall light under the door, the heating cycling loudly, the room temperature at crib height rather than at the thermostat.
And then consider that this may be a phase rather than a problem. Some babies sleep long stretches at four months, some at fourteen. The range is genuinely wide and the second group is not evidence of parental error.
One last thing that matters more than any technique here: your own sleep is not a luxury item to be dealt with after the baby's is solved. Splitting nights, taking a shift, accepting help, going to bed absurdly early — these are load-bearing. I built this site because I could not find this kind of information in one place without wading through people selling things, and if there is one thing I would put in front of a version of myself at 3am, it is that the exhaustion is the problem to be managed, not the character flaw to be overcome.
Questions parents ask
At what age do babies sleep through the night?
Stanford Children's Health defines it as six to eight hours without waking, and says most babies do not start doing it until around three months old. That is a median rather than a deadline, and the spread around it is wide — some babies do it earlier, plenty do it considerably later, and both are within normal. It is also worth knowing that Stanford notes babies often begin waking again around six months, after a period of sleeping through. So the trajectory is not a single line upward; a backslide partway through the first year is a documented pattern.
Is 'drowsy but awake' actually necessary?
It is what the AAP guidance recommends — put babies to bed when they are drowsy rather than waiting until they are asleep — and the reasoning is about continuity between falling asleep and surfacing between cycles. That said, it is a lever rather than a requirement. Many babies who were rocked to sleep for months go on to sleep long stretches. If you have tried it and it produces nothing but a wide-awake baby and a demoralized parent, moving the transfer point gradually earlier over a week or two tends to work better than attempting the full change in one night.
How many hours should my baby be sleeping in total?
The American Academy of Sleep Medicine's pediatric consensus recommends 12 to 16 hours per 24 hours, including naps, for infants aged 4 to 12 months. That total is often more diagnostic than the night stretch on its own, because a baby who is meaningfully short of it is carrying sleep debt, and sleep debt makes night waking worse rather than better. If the number is low, the fix usually lives in the daytime schedule — naps that are too short, wake windows that are too long — before it lives in anything you do at bedtime.
Should I wake my baby to feed before I go to bed?
This practice, often called a dream feed, is something families report mixed results with, and whether it makes sense for your baby is a question for your pediatrician rather than for a general page. What I would flag is that it interacts with feeding and growth, which is exactly the territory where individual medical input matters. If the underlying goal is protecting your own first sleep block, it is worth also considering the much simpler lever: going to bed earlier yourself, which requires no change from the baby at all.
Can a sleep sack help her sleep longer?
A sleep sack solves a specific problem — keeping a baby warm when safe-sleep guidance says nothing loose goes in the crib — rather than being a sleep-lengthening device. That said, a baby who is not waking cold is a baby with one fewer reason to wake, so it can matter indirectly. This is the one product I genuinely used with my own daughter, and I would frame it honestly: it made following the guidance practical rather than making my baby sleep. Our dressing guide covers TOG ratings and room temperature if you want to get the warmth right.
Does starting solids help babies sleep through the night?
This is one of the most persistent pieces of folk advice about infant sleep, and it is not something I am going to endorse or dismiss from a website — when and how solids are introduced is a pediatric conversation tied to developmental readiness, not a sleep intervention to be deployed. What I would say is that if the impulse is to change feeding in order to fix nights, that is precisely the point at which a real conversation with your pediatrician is more valuable than any page, because they can look at growth and intake and give you an actual answer.
My baby wakes at exactly the same time every night. Why?
Consistent timing usually points at structure rather than at a specific problem. Sleep cycles run on a fairly predictable length, so a repeatable surfacing point is expected. The question worth asking is whether she resettles or genuinely wakes. Reliable full wakes at a fixed hour often trace back to the schedule going into that sleep — most commonly a last wake window that no longer suits her age — or to something environmental that happens on a timer, such as heating cycling down, a neighbour's routine, or early light. It is worth being in the room at that hour once, awake, just to observe what changes.
Is it safe to move her into our bed if it means everyone sleeps?
Safe-sleep guidance is clear that a baby should have her own separate sleep space — firm, flat, level, with a fitted sheet and nothing else — and NICHD states that babies should never sleep on an adult bed, couch, or armchair by themselves. I am not the right person to walk you through the nuances of adult-bed sleep arrangements, and I would not try. What I will say is that the situation this question usually comes from is genuine exhaustion, and that the more productive conversation is with your pediatrician about your specific circumstances than with a search engine at 4am.
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Written by
Sukie Gao
Mom of a daughter, and the person behind every tool on this site.
Sukie Gao has a daughter, and when her daughter was a newborn she was exhausted and completely out of her depth. She spent months piecing together sleep advice from scattered corners of the internet, and built My Baby Sleep Schedule so the next tired mother would not have to search as hard. She writes as a parent from lived experience, not as a clinician.
Last reviewed and updated . Sukie is a parent, not a clinician — check anything that matters with your pediatrician.