why my baby not feed properly,,but she is very active to do her milestones

A. Hello good evening !! Give frequent feeds every two to three hours atleast for 5-10 minutes , baby's know their hunger so feed untill their tummy fills. If baby is active and achieving milestones, increasing weight ideally then don't worry. Exclusive breastmilk or formula milk is suggested until 5 completed months start semi solids from 6 month onwards.