Hi, Thank you for asking question on health care magic. Most of the children will have this problem. they are more interested in play than eating foods. Appetite is also bit less because their growth velocity decreases during this time. You should spend more time feeding your son with tender loving care. Offer food which he is interested, not the foods which you feel they are good for his health, You may give him some appetiser like cyproheptadine syrup 2 times daily. Without comparing with his twin sister, see if his weight gain is steady,no weight gain and actually there loss of weight. If he is not gaining weight or loss of weight you need to see apediatrician. Hope this answer will serve your purpose Please feel free to ask any more queries if required Take care Dr.M.V.Subrahmanyam MD;DCH Associate professor of pediatrics