1 of my sons is the same. he lives off yoghurt, cheese, popcorn, alittle fruit mainly. i give him choc complan in his milk every morning and try finger foods- plates of cheese, crackers, carrot, celery with peanut butter, cherry tomatoes and sausage, all cut up and given on a small table where hes playing- helps. he just eats 1 ok size meal a day (ok for him not other kids) just keep trying, variety, and hang in there