A 6-month-old needs 12 to 16 hours of total sleep per 24-hour period, including naps and nighttime sleep. Most babies this age take two or three naps during the day and sleep their longest stretch at night, though the exact schedule varies from baby to baby.
Total Sleep and How It Breaks Down
Those 12 to 16 hours split between daytime naps and a longer nighttime stretch. Nighttime sleep typically makes up the bulk, with most 6-month-olds sleeping six to eight hours at a stretch overnight. By this age, about two-thirds of babies sleep “through the night,” which in infant sleep terms means skipping two feeds and staying asleep for that six-to-eight-hour block. The remaining third still wake for a feeding or two, and that’s normal.
During the day, your baby will nap for a combined two to three hours total. Some babies spread that across three shorter naps, while others consolidate into two longer ones. A common pattern is a morning nap of one to two hours and an afternoon nap of one to one and a half hours, but plenty of healthy babies take shorter naps more frequently.
Wake Windows Between Naps
Wake windows, the stretches of awake time your baby can handle between sleeps, are one of the most useful tools for building a workable schedule. At 6 months, wake windows generally range from 2 to 3 hours.
If your baby is still on three naps, a typical pattern looks like this:
- First wake window: about 2 to 2.5 hours after morning wake-up
- Second wake window: about 2.5 hours after the end of the first nap
- Third wake window: about 2.5 hours after the end of the second nap
- Final wake window before bed: about 2.5 to 3 hours after the last nap ends
Once your baby drops to two naps, the windows stretch slightly longer: 2.5 to 3 hours before the first nap, about 3 hours between naps, and 3 to 3.5 hours between the last nap and bedtime. You don’t need to time these to the minute. They’re guidelines, and your baby’s behavior will tell you when they’re ready.
How to Spot Sleepy and Overtired Cues
Catching your baby’s tired signals before they tip into overtired territory makes falling asleep much easier. Early signs include yawning, droopy eyelids, staring into the distance, and furrowed brows. You might also notice your baby rubbing their eyes, pulling on their ears, or sucking their fingers.
Behavioral shifts are just as telling. A baby who suddenly loses interest in their toys, turns away from sounds or lights, or gets clingy is likely ready for sleep. Some babies make a prolonged whining sound, sometimes called “grizzling,” that hovers just below actual crying.
If you miss those early cues, an overtired baby becomes harder to settle, not easier. When babies push past their sleep window, their bodies release stress hormones like cortisol and adrenaline that actually amp them up. An overtired baby often cries louder and more frantically than usual and may even start sweating. If you’re seeing those signs regularly, try shortening wake windows by 15 to 20 minutes.
The 6-Month Sleep Regression
If your baby was sleeping well and suddenly isn’t, a sleep regression is the likely culprit. Around 6 months, a lot is happening developmentally. Your baby is learning to sit up, possibly starting to crawl, and teething often kicks in around this time. Any of those changes, cognitive, physical, or emotional, can temporarily disrupt sleep patterns.
One milestone that’s particularly disruptive is object permanence, which typically develops between 6 and 9 months. This is when your baby realizes that you still exist even when you leave the room. It’s a huge cognitive leap, but it also means your baby may suddenly protest being put down alone or wake up and cry for you in a way they didn’t before.
Sleep regressions are temporary. There’s no fixed timeline for how long they last, but they do pass as your baby adjusts to their new skills. Keeping your routines consistent through a regression, even when it feels pointless, helps your baby return to their normal patterns faster once the developmental surge settles.
The Nap Transition From Three to Two
Six months is a common age for babies to start dropping from three naps down to two. This doesn’t happen overnight. You might notice the third nap getting shorter, your baby fighting it entirely, or bedtime getting pushed too late because of a late afternoon nap.
During the transition, some days will be three-nap days and some will be two-nap days, and that’s fine. When your baby consistently handles longer wake windows of 2.5 to 3.5 hours without melting down, they’re ready for a two-nap schedule. The total daytime sleep stays roughly the same; it just gets packed into two longer naps instead of three shorter ones.
Safe Sleep Basics at 6 Months
The AAP’s safe sleep guidelines, endorsed by the CDC, apply at every age through the first year. Place your baby on their back for all sleep, naps included. Use a firm, flat mattress in a safety-approved crib with only a fitted sheet. Keep soft bedding, blankets, pillows, bumper pads, and stuffed animals out of the sleep area.
Room-sharing (not bed-sharing) is recommended for at least the first 6 months. This means your baby sleeps in their own crib or bassinet in your room. Avoid letting your baby overheat; if their chest feels hot or they’re sweating, they’re likely too warm. Offering a pacifier at nap time and bedtime is also associated with reduced risk of sleep-related infant death.
At 6 months, many babies are starting to roll in both directions. A baby who rolls onto their stomach on their own during sleep can stay in that position, but you should still place them on their back at the start of every sleep.