Breastfeeding Babies, Combination Breastfed and Formula Fed Babies and/or Babies with Reflux. Newborns to 3 months old: Feedings every 2-3 hours, on-demand. 3-4 Months: 2-3 feedings per night or every 3-6 hours, on-demand. 5-6 Months: 1-2 feedings. 7-9 Months: 1, maybe 2, feedings. 10-12 Months: Sometimes 1 feeding.