DS is 11 months old and in the past couple of weeks he has started either hitting me, biting me or scratching my face when I try to take something off of him that he shouldn't be playing with. Every time I say no and put him down and ignore him for one minute but it doesn't seem to be helping. Suggestions for stopping this please! I'm scared he is going to turn in to the child who attacks other children at play group because they have a toy he wants!