What to Expect the First Year: (Updated in 2025)

by Heidi Murkoff

Stock up with four 4-ounce bottles and ten to twelve 8-ounce bottles. If you’re combining bottle-feeding with breastfeeding, four to six 8-ounce bottles should be plenty. If you’re nursing exclusively, one 8-ounce bottle is enough as a just-in-case.