My baby is 5.6 years old n his weight is just 15 kg what should i give to him for weight increase??

Hi I think what you should focus on is what he is eating on day tiday basis than exclusively focusing on a particular diet. I mean if he is eating a parantha with curd then let that parantha be stuffed with cheese or if he doesn't like vegetable or dal then knead the flour with vegetable or dal so that he gets the complete nutrition. Also make him eat eggs, chicken, panel, fruits, juices, vegetables. Almonds, walnut, raisins. Do not give him junk food though once in a month is okay. You can consult with the paediatrician you can discuss and may be he can give some supplement to increase hos hunger.