My daughter gave birth to my grandson 4 month ago. i'm concerned because he's not gaining much weight. at birth he weighed 6lbs 8oz and was 19 1/2 long. at his 4 month check up he he actually lost weight. he currently weighs 9 lbs 10 oz. my question is

Reevaluate: Couldn't see your question , you need to reask. Has he been ill, is he nursing or bottle fed. Need to see his growth chart and curve is he changing percentiles. Have you spoken to your daughter. Theses are all things to ask about. He may be fine all babies don't need to be fat, but if he is not thriving share your concern with your daughter.