Yes, it’s normal for a newborn to sleep most of the day. Newborns typically sleep about 16 to 17 hours out of every 24, split roughly between 8 to 9 hours of daytime sleep and about 8 hours at night. That can look like a baby who does almost nothing but sleep, eat, and drift off again. The key question isn’t how much your baby sleeps, but whether they wake enough to feed well and seem healthy when they’re awake.
What Normal Newborn Sleep Looks Like
Newborn sleep doesn’t follow a schedule. Your baby will cycle through short stretches of sleep and wakefulness throughout the day and night, with no real difference between the two. Most sleep periods last anywhere from 30 minutes to 3 or 4 hours. Because newborns haven’t developed a circadian rhythm yet, they have no concept of daytime versus nighttime, which is why the sleep can feel constant and disorganized.
Between these stretches, your baby may only be awake long enough to feed before falling asleep again. That’s completely typical in the first few weeks. Alert, wide-eyed periods are short and may only last 20 to 30 minutes at a time. If your baby is feeding well, producing enough wet diapers, and seems responsive when awake, this pattern is healthy even if it feels like they’re “sleeping all day.”
Growth Spurts Can Mean Even More Sleep
There will be periods when your baby sleeps noticeably more than usual, and growth spurts are a common reason. Research published through the American Academy of Sleep Medicine found that infants experienced irregular bursts of sleep, with total daily sleep jumping by an average of 4.5 extra hours for about two days at a time. During these bursts, babies also took about three additional naps per day.
These sleep surges directly corresponded to physical growth. Measurable increases in body length tended to occur within 48 hours of the extra sleep. Each additional hour of sleep increased the probability of a growth spurt by 20 percent, and each extra nap raised it by 43 percent. So if your baby suddenly seems to sleep even more than their already-impressive baseline, their body may literally be growing.
Feeding Still Needs to Happen
Even though newborns sleep most of the time, they need to eat frequently. Breastfed babies should nurse about 8 to 12 times in 24 hours, roughly every 2 to 4 hours. Formula-fed babies follow a similar pattern in the early weeks. This means you’ll likely need to wake your baby for some feedings, especially in the first few weeks before they’ve regained their birth weight.
If your baby is sleeping through a feeding window, try gentle approaches first: talk to them, move their arms and legs, tickle the bottom of their feet, or rub their cheek. Many newborns will wake up if you undress them, since the combination of physical handling and cooler air gets their attention. A diaper change (even if the diaper is clean) can also do the trick. As a last resort for a baby who’s significantly overdue for a feed, a bath tends to work when nothing else does.
After the first five days of life, your baby should produce at least six wet diapers per day. This is one of the simplest ways to confirm they’re getting enough milk, even if they seem to spend most of their time asleep.
The Difference Between Sleepy and Lethargic
There’s an important line between a healthy newborn who sleeps a lot and a baby who is lethargic. A sleepy baby wakes for feedings (even if they need a nudge), feeds effectively, and appears alert and responsive during their brief awake periods. A lethargic baby is different: they appear to have little or no energy, are drowsy or sluggish even when “awake,” and may be difficult to rouse for feedings. When you do manage to wake them, they don’t respond normally to sounds or your face.
This change can develop gradually, making it harder to spot. The general rule from Children’s Hospital of Philadelphia: if your baby is alert and active when awake, feeding well, and can be comforted when crying, occasional variations in sleep are normal.
Signs That Warrant a Call to Your Pediatrician
Excessive sleepiness in a newborn can sometimes signal a medical issue. Jaundice is one of the most common culprits. Mild jaundice is extremely common and usually harmless, but when bilirubin levels climb too high, it can make a baby very sleepy and difficult to wake for feeds. Other signs of worsening jaundice include poor nursing or bottle feeding, increasing yellow discoloration of the skin, fussiness, and fewer wet or dirty diapers than expected.
Low blood sugar and infections can also cause unusual sleepiness in newborns. Watch for these red flags that call for immediate medical attention:
- Unresponsiveness: your baby can’t be woken with gentle stimulation, undressing, or a diaper change
- Poor feeding: consistently refusing the breast or bottle, or falling asleep seconds into a feed without transferring milk
- Fewer diapers: falling below six wet diapers a day after day five
- Fever or high-pitched cry
- Stiff, limp, or floppy body, or a body that arches backward
Safe Sleep While They’re Sleeping So Much
Since your newborn will be sleeping the majority of the time, safe sleep setup 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. Keep the sleep area in the same room where you sleep for at least the first six months.
Remove all soft bedding: no blankets, pillows, bumper pads, or stuffed animals. Don’t cover your baby’s head, and watch for signs of overheating like sweating or a hot chest. Offering a pacifier at sleep times is also associated with reduced risk (if you’re breastfeeding, you may want to wait until nursing is well established before introducing one).