My son hasn't been eating well since 13 months old. Recently, he doesn't eat any meal at all except for little bit fruit, juice, and milk. We cut all his snacks, yet still he doesn't eat any real food. This continues for more than half a month already. But he's healthy, happy and active. We don't know where his energy comes from. In the past two days, he suddenly had light green poops, as green as a young tree leaf. Is this resulting from his no-intake of food. I am quite concerned. In addition, his weight, compared to other kids in the same age group, he's always the smaller one. Shall I be worried about his food intake and his green poop? I only heard infants had green poop, not preschooler. Thanks in advance.