hello dr. my son is 1 year 1 month old. my concern is abt his look. he s looking too lean. almost i m giving him healthy food properly. his milestome also good. he s started walking now. my worry is his weight he s just 7.7. looking too lean. his birth wt. 2.670. what to do for weight gain. what shall i give for increase the weight. any protein powder. or i shall consult with pediatrician directly.