My breast milk supply is very good. but while my baby taking he is not gaining weight . why? What I have to do to gain my baby weight?

A. See what happens if sometimes you may have very good quantity of milk with the quality of milk may not be enough for the child to gain sufficient amount of check for at least 2 to 3 weeks if your child does not gain sufficiently 450 g to 500 g by completing the time of 3 to 4 weeks then in that case it would be for sure that the feeding is not right so you can start giving formula milk