My baby is 5month and half, weight 15 lb. a day he takes 17 oz formula maximum,he is not feeling hungry for 4 to 5 hours.always been having trouble feeding him since 3 months old. First was the thrush,then he had a cold which i think was effect his appetite . He poo once every 3 to 4 days, exert oneself really hard. I tried different milk for him to see if any improvement, didn't work, so I went back to his first milk( aptamil) I started give him solid since he was nearly 5 months,I tried to give him formula before his solid,didn't want to take milk ,so I give him solid if he doesn't want milk to make sure there is something in his stomach. Some days he had 3 meals solid a day.i am very concern about his milk intake.does any one know what I have done wrong ? My baby now looks skinny, he was a chubby baby before all these problem occurred .many thanks