A one-week-old baby sleeps roughly 16 hours out of every 24, split almost evenly between day and night. That sleep comes in short bursts of one to three hours at a time, interrupted by feeding, so it won’t look anything like the long stretches you’re used to. If your newborn seems to do nothing but sleep, eat, and sleep again, that’s exactly what’s expected.
Total Sleep in 24 Hours
Sixteen hours is the commonly cited average, but healthy newborns fall on a spectrum. Some sleep closer to 14 hours, others closer to 18. What matters more than hitting a specific number is the overall pattern: your baby sleeps, wakes to feed, stays alert briefly, then drifts off again. At one week old, about half of all that sleep time is spent in REM (active sleep), which is the light, dream-stage sleep where you’ll notice fluttering eyelids, twitching, and irregular breathing. This is normal and important for brain development.
How Long Each Sleep Stretch Lasts
Don’t expect marathon naps. A one-week-old typically sleeps in stretches of one to three hours before hunger wakes them. Between those stretches, wake windows are remarkably short: anywhere from 30 minutes to about 90 minutes. That wake time includes feeding, a diaper change, and maybe a few minutes of quiet alertness before your baby is ready to sleep again.
If your baby is awake for longer than 90 minutes, they’re likely overtired. Overtired newborns can actually have a harder time falling asleep, becoming fussy and difficult to settle. Watching for early sleepy cues, like turning away from stimulation, yawning, or making jerky movements, helps you catch that window before it closes.
Why There’s No Day-Night Pattern Yet
At one week old, your baby has no internal clock distinguishing day from night. The circadian rhythm that eventually creates longer nighttime sleep and shorter daytime naps hasn’t developed yet. This is why your newborn may have their longest awake period at 2 a.m. and their deepest sleep at noon. It’s not a behavior problem. It’s biology.
You can start gently encouraging a day-night distinction even this early. Keep daytime bright and social: open curtains, let normal household noise happen, and interact with your baby during awake periods. At night, do the opposite. Keep lights dim, feedings quiet, and skip any playtime. This won’t produce immediate results, but it lays the groundwork for a circadian rhythm that typically starts emerging around six to eight weeks.
Waking Your Baby to Feed
This surprises many new parents, but at one week old, you may need to wake your baby to eat. Newborns need to feed every two to three hours (measured from the start of one feeding to the start of the next), and some sleepy babies won’t wake on their own. This is especially important until your baby has regained their birth weight, which usually happens by about 10 to 14 days old.
Once your pediatrician confirms your baby is gaining weight well, you can generally let them sleep until they wake on their own for nighttime feedings. Daytime feedings should still happen regularly to make sure your baby gets enough nutrition across the full day. If you’re breastfeeding, frequent feeds also help establish your milk supply during this critical early window.
Safe Sleep at This Age
Because a one-week-old spends the majority of their time asleep, the sleep environment matters enormously. Place 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. No blankets, pillows, bumper pads, or stuffed animals.
Keep your baby’s sleep space in the same room where you sleep, ideally for at least the first six months. Room-sharing (not bed-sharing) makes nighttime feeds easier and reduces the risk of sleep-related infant death. Watch for overheating, too. If your baby is sweating or their chest feels hot to the touch, remove a layer. A sleep sack or swaddle is a safer alternative to loose blankets for warmth.
Normal Sleepiness vs. Something More
With a baby who sleeps 16 hours a day, it can be hard to know when “sleepy” crosses into concerning territory. The key distinction is what happens during awake times. A healthy one-week-old, when awake, is alert and responsive. They make eye contact, react to sounds, feed actively, and can be comforted when upset. A baby who checks those boxes during wake periods is simply a normal, sleepy newborn.
Lethargy looks different. A lethargic baby is difficult to wake for feedings, and even when awake, they seem limp, unresponsive to your voice or face, and show little energy. This can develop gradually, making it harder to notice. Lethargy in a newborn can signal infection, low blood sugar, or other conditions that need prompt attention. If your baby consistently can’t be roused or seems unusually unresponsive when awake, contact your pediatrician.
What the First Weeks Actually Look Like
The reality of newborn sleep at one week is messy and unpredictable. Your baby won’t follow a schedule, and no two days will look the same. Some days they’ll sleep 17 hours, others 14. Some stretches will last three hours, others barely one. This is all within the range of normal. The consistency comes later, as your baby’s brain matures and their circadian rhythm kicks in.
For now, the simplest framework is this: expect your baby to sleep most of the day in short bursts, stay awake only briefly between sleeps, and need to eat every two to three hours. If they’re feeding well, gaining weight, and alert when awake, their sleep is on track.