my son is 4years old and he is not eating anything other than milk. i tried so many things. and tried way best to make him eat. took him to the park, zoo, everywhere he likes but still no changes. even tried not to give milk for half of the day he didn't ask for it. not eating any junk tho. I have put him to preschool too. last year he was in pre kg. teachers too tried but failed. tried appetite syrup prescribed by the pediatric even then nothing happened. please someone give me some suggestions.