my baby is 5 months and 15 days old his weight is 5.7 kg is it good or under weight m worried about his weight how to gain his weight ?

A. Hello mom check as per her birth weight they almost are expected to double their birth weight by the age of 4 to 6 months and then triple by the age of 1 year . Start weaning foods for the baby initially with liquid and then gradually move to semi solids and mashed foods