my baby is 7month 3days now,her birth weight was 3.1kg now she is 5.7 kg .her weight is not increasing for last two month .but she is active,stand with support ,sitting alone,started giving solid food,what I have to do

A. Child should have been a minimum of 6.2 kg by the age of six months only so child is not even maintaining twice of birth weight which is not healthy I think you’re feeding is not working out well for your child so you should start giving formula to the child