my son is 7 months old. I started giving him semi solid at 5 and half months. initially he was taking it by spoon feeding there was no major issue. but since last month he is not interested in eating. he is not ready to accept it. I have to force him to open his mouth still he doesn't so now he has lost weight. I don't understand what to do because he is doesn't show interest in eating even milk intake has gone down. I don't know how to feed him