Help!

Brooke

My daughter is 5 weeks and 5 days old and is mainly fed breast milk supplemented with a little bit of formula (3oz breast milk) (1oz formula) and she still seems so upset and hungry afterwards. I try calming her and waiting an hour at least and then I’ll usually give another once of breast milk or formula.. then she’s content. Do you think she could not be getting full from my breast milk? I’m so lost