Most will still be waking once or twice during the night for feeds. By 3 months, many babies will have settled into a pattern of longer times awake during the day, and longer sleep times (perhaps 4 to 5 hours) at night. Most wake 2 to 3 times during the night for feeds.īabies have shorter sleep cycles than adults and wake or stir about every 40 minutes. In the first few weeks after birth, babies sleep much of the day and night.