7 month old babies need an average of 14 hours of sleep a day with 11-12 hours of sleep at night and 2-3 hours during the day. Most babies this age can stay awake for 2-3 hours in a stretch. However, some babies are on a 2-nap schedule while others are still taking three naps. Separation anxiety also affects babies this age. This article outlines the average 7-month-old baby's sleep schedule, including milk feedings for breastfeeding and formula-feeding babies, solids, naps, and nighttime sleep.