An 8-month-old typically needs 2.5 to 3.5 hours of daytime sleep, split across two naps. Most babies this age have already dropped their third nap or are in the process of doing so, settling into a morning nap and an afternoon nap that each last roughly one to two hours.
How Much Daytime Sleep to Expect
The sweet spot for total daytime sleep at 8 months is 2.5 to 3.5 hours. That total gets divided between two naps, though exactly how it splits varies from baby to baby. Some take a longer morning nap and a shorter afternoon one, others do the reverse, and some split the time fairly evenly. Individual naps can range from 30 minutes to 2 hours, but capping any single nap at 2 hours helps protect nighttime sleep.
At this age, most babies sleep 11 to 12 hours overnight (with or without brief wakings), bringing the full 24-hour total to roughly 13 to 15 hours. If your baby is consistently sleeping much more or less than 2.5 to 3.5 hours during the day and nighttime sleep is suffering, the nap schedule is worth adjusting.
A Typical Two-Nap Schedule
Most 8-month-olds wake between 6:00 and 7:00 a.m., take a morning nap around 9:00, an afternoon nap around 1:00, and go to bed between 7:00 and 8:00 p.m. Wake windows, the stretches of awake time between sleep periods, generally run about 2.5 to 3.5 hours at this age. The first wake window of the day tends to be the shortest, and the last one before bedtime tends to be the longest.
Here’s what a sample day might look like:
- 7:00 a.m. Wake and milk feeding
- 8:15 a.m. Breakfast (solids)
- 9:00 a.m. Morning nap (1 to 2 hours)
- 10:00 a.m. Milk feeding
- 11:00 a.m. Lunch (solids)
- 12:30 p.m. Milk feeding
- 1:00 p.m. Afternoon nap (1 to 2 hours)
- 5:00 or 5:30 p.m. Dinner (solids)
- 6:15 p.m. Begin bedtime routine
- 7:00 p.m. Milk feeding and bedtime
Some parents stagger solids between milk feedings so the baby isn’t too full or too hungry for either. Others combine solids and milk at the same sitting. Neither approach is better; it depends on which one your baby tolerates well.
Dropping the Third Nap
If your 8-month-old is still taking three naps, you’re not behind, but this is the age when most babies are ready to consolidate down to two. Signs that the third nap has run its course include: resisting or skipping a nap entirely, taking longer than usual to fall asleep at bedtime, waking more at night, waking before 6:00 a.m. when that wasn’t happening before, or needing a bedtime pushed past 8:00 p.m. to fit the last nap in.
Look for a consistent pattern over one to two weeks rather than reacting to a couple of rough days. Teething, illness, and developmental leaps can temporarily disrupt sleep without meaning your baby’s schedule needs a permanent change. When you do drop the third nap, expect the transition to take a week or two. You may need to move bedtime earlier by 30 minutes during that adjustment period to prevent overtiredness.
Why Too Much or Too Little Nap Time Backfires
It seems logical that skipping naps would make a baby sleep better at night, but the opposite is often true. When babies stay awake too long, their bodies release stress hormones like cortisol and adrenaline. Instead of winding down, they get wired. Overtired babies cry louder and more frantically than usual, may sweat more (a side effect of elevated cortisol), and often fight the very sleep they desperately need.
On the other end, too much daytime sleep can chip away at nighttime hours. If your baby naps well past the 3.5-hour mark during the day and then struggles to fall asleep at bedtime or wakes frequently overnight, trimming naps slightly can help. A good rule of thumb from the Mayo Clinic: let babies nap as long as they want unless it’s causing problems at night. If a late-afternoon catnap is creeping into the schedule, phasing it out by 9 months usually helps preserve an earlier, smoother bedtime.
The 8-Month Sleep Regression
Right around 8 months, many babies hit a rough patch with sleep. This isn’t random. At this age, babies are learning to crawl, pull to stand, and sit up independently. Their brains are also making major leaps in understanding object permanence (realizing you still exist when you leave the room) and language processing. All of that new wiring can cause restlessness during naps and more frequent night wakings.
Teething often coincides with this period, adding physical discomfort to the mix. The regression typically lasts two to six weeks. During this stretch, naps may shorten or get skipped altogether. Sticking to your usual schedule as closely as possible helps your baby return to their baseline once the developmental surge settles.
Signs Your Baby’s Wake Windows Need Adjusting
The right wake window length matters as much as total nap time. If your baby is rubbing their eyes, pulling at their ears, turning away from toys, or getting fussy well before their scheduled nap, the wake window may be too long. On the flip side, a baby who lies in the crib wide-eyed and chatty for 20 or 30 minutes before falling asleep might need a slightly longer stretch of awake time.
Wake windows tend to lengthen gradually over the course of a month. An 8-month-old who needed only 2.5 hours of awake time between naps might need closer to 3 or 3.5 hours by 9 months. Watching your baby’s cues alongside the clock gives you the most accurate read on when sleep pressure is building.