Why is baby waking at night? Is it hunger? Discomfort? Something else? Use our checklist to figure it out! Top 15 Reasons Why Baby Is Waking At Night Hunger: Newborns need to eat around the clock, but even older babies need one (or possibly two) feedings at night. We generally recommend an attempt to night wean around 9 months, although we consider it normal for a baby to need one night feeding up to 12 months of age in some cases. Wet/Leaky/Dirty Diaper: There's really no