#AskTheExpert Hello , my daughter is 9 month old . Her birth weight was 2.78 kg and now she is 6.3 kg only. I am giving her high calorie diet but still she is not gaining weight since two months. Also she is very active ,but faces gastric issues many times . She doesn't like to crawl . She doesn't sits on her own but sits without support. What should I do to make her gain weight and starts crawling ?