Most babies can sleep a 5- to 6-hour stretch by around 3 to 4 months old, and many can manage 8 or more hours by 6 months. But “sleeping through the night” doesn’t mean 12 uninterrupted hours, at least not at first. It means a long enough stretch that you, the parent, get meaningful rest. Getting there involves a mix of biology, environment, and consistent habits, and the timeline varies from baby to baby.
What “Sleeping Through the Night” Actually Means
For infants under 3 months, sleeping through the night is clinically defined as a stretch of just 5 or 6 hours. That might feel disappointing, but newborns have tiny stomachs and genuinely need frequent feeds. Their sleep cycles are also significantly shorter than adult cycles, and they spend a larger proportion of sleep time in lighter, more easily disrupted stages.
Between 3 and 6 months, longer stretches become biologically possible as your baby’s internal clock begins to mature. The pineal gland, which produces melatonin (the hormone that signals nighttime drowsiness), takes several months after birth to begin functioning on its own. Before that, your baby is essentially borrowing melatonin passed through breast milk or simply hasn’t developed a strong day/night rhythm yet. This is why newborns seem to have their days and nights mixed up, and why pushing for long sleep stretches too early rarely works.
Set Up the Right Sleep Environment
Your baby’s sleep space matters more than you might think. The American Academy of Pediatrics recommends placing infants on their backs in their own crib, bassinet, or portable play yard with a firm, flat mattress and a fitted sheet. Keep the space clear of loose blankets, pillows, stuffed toys, and bumper pads. Avoid letting your baby sleep on a couch, armchair, or in a swing or car seat (unless they’re actually riding in the car).
Room temperature should be comfortable but not warm. A good target is between 68 and 72°F, and indoor humidity between 35 and 50 percent helps keep airways comfortable without encouraging mold. Dress your baby in a sleep sack or wearable blanket rather than using loose covers.
If you use a white noise machine, place it at least 7 feet away from your baby’s sleep space and keep the volume at or below 50 decibels, roughly the sound of a quiet dishwasher. The AAP recommends these limits to protect developing hearing. White noise can help mask household sounds and provide a consistent sleep cue, but louder isn’t better.
Build a Predictable Bedtime Routine
Babies thrive on predictability. A short, consistent sequence of events before bed, the same 3 or 4 steps every night, teaches your baby’s brain that sleep is coming. This could be a bath, a feeding, a book, and then into the crib drowsy but awake. The whole routine doesn’t need to be longer than 15 to 20 minutes.
The “drowsy but awake” part is the key skill. Babies who fall asleep independently at bedtime are much more likely to resettle themselves when they naturally wake between sleep cycles overnight. If your baby always falls asleep while being rocked or fed, they’ll look for that same help at 2 a.m. when they briefly surface between cycles. Putting them down while they’re still slightly awake gives them a chance to practice falling asleep on their own.
When and How to Night Wean
Before roughly 6 months, most babies still need at least one overnight feed. Formula-fed babies over 6 months are unlikely to wake from genuine hunger, since formula digests more slowly than breast milk. Breastfed babies may continue needing a night feed a bit longer, depending on their daytime intake.
When you’re ready to phase out night feeds, a gradual approach works well. If your baby is taking 60 ml (about 2 ounces) or less during a night feed, you can stop it altogether and resettle with other soothing techniques. If they’re drinking more than that, reduce the amount by about 20 to 30 ml every other night. So if your baby normally drinks 180 ml, offer 150 ml for two nights, then 120 ml for the next two, and continue stepping down over 5 to 7 nights. This slow reduction lets your baby gradually shift those calories to daytime.
Dream Feeds
A dream feed involves feeding your baby one last time before you go to sleep, usually around 10 or 11 p.m., without fully waking them. You gently pick them up, stroke near their mouth to trigger the rooting reflex, and offer a breast or bottle. Many babies can eat this way while staying mostly asleep. The idea is to “top off the tank” so they sleep a longer stretch before their next waking.
Dream feeds are popular, but the honest truth is there’s no rigorous experimental data proving they reduce overnight wakings. Many parents swear by them, and they’re unlikely to cause harm. But if a dream feed doesn’t seem to help after a week or so, it’s fine to drop it.
Sleep Training Methods Compared
Sleep training generally works best after 4 to 6 months, once your baby is developmentally capable of longer sleep stretches. There are two broad categories, and neither is universally “right.” The best method is the one you can stick with consistently.
Graduated extinction (Ferber method): You put your baby in the crib awake, leave the room, and return at gradually increasing intervals to briefly reassure them. The first night you might check in after 3 minutes, then 5, then 10. Each subsequent night, you stretch the intervals. Your baby learns to fall asleep independently, knowing you’ll still come back.
Full extinction (Weissbluth method): A more direct approach where you put your baby down and don’t return for check-ins. It’s harder emotionally for parents but often produces faster results.
No-cry/gentle methods: These take longer but involve less crying. The “pick up, put down” method has you place your baby in the crib, pick them up to comfort them if they fuss, and put them back down as soon as they’re calm, repeating until they settle. The “chair method” (sometimes called the Sleep Lady Shuffle) has you sit beside the crib to comfort your baby, then move your chair farther away each night until you’re outside the room.
No matter which approach you choose, give it at least one to two weeks before deciding it isn’t working. None of these methods produce results on the first night. But if you’re not seeing any progress after two weeks, it’s reasonable to take a break and try again, or try a different approach.
Sleep Regressions Are Normal
Even babies who were sleeping beautifully will hit periods where everything falls apart. These regressions are temporary, typically lasting 2 to 4 weeks, and they’re driven by real developmental changes.
The most well-known regression hits around 4 months, when your baby’s sleep architecture permanently shifts to include more adult-like sleep cycles. This means more brief wakings between cycles, and if your baby hasn’t learned to fall asleep independently, each one becomes a full waking. Around 8 to 9 months, separation anxiety kicks in. Your baby now understands that you exist when you leave the room, and they don’t love it. Reaching new milestones like rolling, crawling, or pulling up can also cause temporary disruptions, because babies often want to practice their exciting new skills at 3 a.m.
Growth spurts, teething, illness, travel, and changes in routine (like starting daycare) can all trigger regressions too. The best response is to stay consistent with your usual bedtime routine and sleep expectations. Introducing new sleep crutches during a regression, like bringing your baby into your bed or rocking them to sleep after months of independent sleep, can create habits that outlast the regression itself.
Realistic Expectations by Age
Newborns (0 to 3 months) sleep in short bursts around the clock. You can start building good habits, like exposing them to daylight during the day and keeping nighttime feeds dim and boring, but formal sleep training isn’t appropriate yet.
From 3 to 6 months, longer nighttime stretches become possible. This is when a consistent bedtime routine pays off, and when many families begin sleep training if overnight wakings are frequent. One or two night feeds may still be needed.
By 6 to 12 months, most babies are physiologically capable of sleeping 8 to 12 hours overnight without a feed. If your baby is still waking frequently at this stage and is growing well, the issue is almost always a sleep association (needing to be rocked, fed, or held to fall back asleep) rather than hunger. This is the window where sleep training tends to be most effective and where night weaning can happen comfortably.