My baby is 14 month now and his weight is only 9kg ? How can I increase his weight?

A. Hai good afternoon !! Feed 3 meals and 2 snacks include high calorie, high protein foods... Banana, mango, potato, beans, peas, dal (pulses, legumes), khichdi, idly, cerelac with pulses, grains,dry fruits and nuts powder ,dal rice, curd rice, ghee, cheese, butter, paneer,dry fruits and nuts powder or Barfi, Ladoo, soya,egg,meat , poultry,full fat milk helps in increasing weight..