Weight gain food for 7 yrs and 3 m old boy?

A. Namaste Mom, You can give them now ghee in their meals, also you can include panner, curds, milk , fruit milk shakes such as avacado, banana , chikku etc you may also include eggs, chicken as such , also dals, lobia, chana etc millets would also be helpful, chillas, stuff paranthas, nuts and seeds,