hello my baby is seven months old. his birth weight was 3.3. but now he is only 6.6kg. please tell me how can I improve his weight.

A. 6.6 should have been there by completing the age of six months are looking at the burnt to eat right now for a seven month old child this is Lil underweight it should have been somewhere around 7200 g by now so just you must have started food to go ahead with giving more of proteins vegetarian and dairy products