DS is 1 next week. He likes certain finger foods but he is starting to get difficult to manage at meal times because he insists on throwing his food and his water cup. It doesn't mean he doesn't want it, just that he is asserting himself. E.g. he doesn't want food on his tray until he says so - he'll throw food away if I give it to him, but then instantly beg for it back and eat it. It's starting to drive me crackers. Is he big enough to say NO now and not give it to him if he throws it? It's different from the end of the meal when he throws the food away because he's had enough.