This article outlines the average 11-month-old baby schedule, including milk feedings for breastfeeding and formula-feeding babies, solids, naps, and nighttime sleep. Skip to the schedule 11 Month Old's Sleep and Development At this age, most 11 month olds can sleep through the night, without a feeding. Babies this age take 2 naps for a total of 2 to 2 1/2 hours per day plus 11-12 hours at night. A very small percentage transition to one nap as early as 10 months, but not many, so