my baby is week wt food can I give him to be active

A. Hello mom weak in the sense is he underwieght or is he over all dull with been less active for his age ? you can give the child soft consistency foods , and give dry fruits and nuts , fresh seasonal fruits & vegetables , different types of dals , panner , ghee ,curds , rice , roti , ragi porridge , millets , sago , oats etc