J.K.
My son is 3 and for the past 6 mos has eaten little to nothing each day. He drinks a few glasses of milk and a few glasses of juice, eats a hot dog or a few nuggets, a few green beans, daily vitamins, and that's about it. He is in at-home care, and will eat there more than for me -- argh! But... kids won't starve themselves, just continue to offer little amounts of food with each mealtime.
Frustrating and good luck:)