My 4 year boy is under weight, not eating very well. Please guide some weight gain food. he is only 12 kg while he is 4 year and 4 month old boy.

A. dear mum consult doctor for nutritional deficiencies like iron and zinc which can affect appetite and food intake deworming twice a year give small frequent meals add ghee to every meal good protein from egg , non veg, sprouts, chana sattu powdered nuts to food, dry fruits include seasonal fruits and vegetables in daily diet