DS is 11 mos, and is a great eater. He eats a yogurt with bites of sandwich and some fruit for lunch, veggies and chicken or rice for dinner, and cheerios all day long. But he is really starting to dislike his breakfast cereal. At what point can we stop the cereal? I want to make sure he gets enough iron, but I don't want to force cereal on him if he doesn't need it. Thanks!