A 10-week-old typically sleeps about 8 hours at night, though not in one continuous stretch. At this age, most babies wake one to three times overnight for feeding, so the longest unbroken sleep period you can realistically expect is around 4 to 6 hours. That gap between feeds will gradually lengthen over the coming weeks as your baby’s stomach grows and can hold more milk.
What “Sleeping Through the Night” Actually Means
If you’ve heard that babies start sleeping through the night around this age, the definition is probably different from what you’re imagining. For infants in the 1- to 3-month range, “sleeping through the night” means a single stretch of just 5 or 6 hours. Not 8, not 10, and certainly not the uninterrupted night you’re used to as an adult. Some 10-week-olds hit this milestone, but many don’t, and both are completely normal.
The variation between babies is enormous. One 10-week-old might sleep a 6-hour stretch starting at 7 p.m., wake for a feed, then sleep another 3 hours. Another might wake every 2.5 to 3 hours all night long. Breastfed babies tend to wake more frequently than formula-fed babies because breast milk digests faster. None of this signals a problem with your baby’s development or your parenting.
Total Sleep in 24 Hours
Newborns sleep roughly 16 hours per day, split fairly evenly between day and night: about 8 to 9 hours of daytime sleep and about 8 hours of nighttime sleep. At 10 weeks, your baby is still in this range, though you may notice nighttime sleep starting to consolidate into slightly longer stretches while daytime sleep becomes more nap-like.
During the day, most 10-week-olds take 4 to 5 naps. The awake windows between naps are short, typically 45 minutes to 1 hour and 45 minutes. If your baby is staying awake much longer than that, they’re likely overtired, which can actually make nighttime sleep worse. Watching for early sleepy cues (turning away from stimulation, staring off, rubbing eyes) and starting a nap before fussiness kicks in tends to produce better sleep around the clock.
Why Night Feedings Still Matter
At 10 weeks, your baby’s stomach is still small, and frequent feeding is biologically necessary. Exclusively breastfed babies eat 8 to 12 times in a 24-hour period, averaging a feed every 2 to 4 hours. Some babies will give you one longer gap of 4 to 5 hours between feeds, and that longer stretch usually falls during the first part of the night.
As your baby grows, their stomach capacity increases and they can take in more milk per session. This naturally pushes nighttime feeds further apart. By 3 to 4 months, many babies drop to one or two overnight feeds. Trying to stretch feeds before your baby is ready can backfire: a hungry baby sleeps poorly, and adequate nutrition at this age supports the rapid brain development happening during sleep. About half of your baby’s sleep time is spent in REM sleep, the phase most closely linked to brain growth.
Helping Your Baby Build Better Nighttime Habits
You can’t “train” a 10-week-old to sleep through the night, but you can start reinforcing the difference between day and night. Keep daytime bright and active, with normal household noise. At night, keep lights dim and interactions quiet and brief during feeds. Over time, this helps your baby’s internal clock sort out when the long sleep should happen.
A consistent bedtime routine doesn’t need to be elaborate. Even at this age, a simple sequence (diaper change, feeding, swaddle, lights off) signals to your baby that a longer sleep period is coming. Putting your baby down drowsy but not fully asleep can also help them begin to learn the skill of falling asleep independently, though at 10 weeks this works for some babies and not others.
Safe Sleep Setup
However your baby sleeps, the environment matters. The AAP recommends placing your baby on their back for every sleep, including naps. Use a firm, flat mattress in a safety-approved crib or bassinet with only a fitted sheet. Keep blankets, pillows, bumper pads, and stuffed animals out of the sleep area. Ideally, your baby’s crib or bassinet stays in your room for at least the first 6 months.
Overheating is a risk factor for sleep-related infant deaths. Dress your baby in one layer more than you’d wear comfortably, and skip hats indoors. If your baby is sweating or their chest feels hot to the touch, they’re overdressed. Offering a pacifier at bedtime is also associated with reduced risk. If you’re breastfeeding, it’s fine to introduce a pacifier once feeding is well established.
What the Next Few Weeks Look Like
Sleep at 10 weeks can feel relentless, but this period changes quickly. Between 3 and 4 months, most babies begin consolidating nighttime sleep into longer blocks, and the total number of overnight wakings drops. By 4 months, a stretch of 6 to 8 hours at night becomes more common, though a developmental leap around that age (sometimes called the “4-month sleep regression”) can temporarily disrupt progress.
If your 10-week-old is giving you one 4- to 5-hour stretch at night, they’re right on track. If they’re still waking every 2 to 3 hours, that’s also normal, especially for breastfed babies. The trajectory matters more than any single night. As long as your baby is gaining weight well and having enough wet and dirty diapers, their sleep pattern is working for their body, even if it isn’t working for yours yet.