My baby weight is 6.7 kg he is 9 months 27 days old weight not increasing can i give cow milk now not ready to drink to formula

A. Hai good morning !! Babies double thier birth weight by 5-6 months ,check if baby doubled her birth weight . Baby present weight for 9 months is ok,if baby is active no need to worry. Cow milk,buffalo milk are not suggested below one year. Give mother milk or formula milk along with semi solid foods 3 meals a day is suggested to feed.