Have you tried making cutlets with vegetables (boiled and mashed). The small crispy cutlets interests my son and he has some happily.
But .. yes.. it's a nightmare to get these kids to eat something. .. my daughter was the same when she was small...but after 4 years.. thank god. .she has a much better eating habit..
So like Daza mentioned. . Don't get worried about it too much.. am sure it will change ?