Hi. Seems like things are a bit tough. I can see that you have a new baby in the house. It may be that he is lashing out at feeling like he is losing his place. As a thought it may be worthwhile giving him a little present from the new baby. You could also try building in a family story time when you're feeding. Another idea might be to give him some of his own special time. Also if he seems to be getting a little restless or agitated it might be worthwhile instituting a little diversional therapy. A little drawing perhaps?? That might also help him with giving him an outlet for his emotions. I don't know.... I think that smacking him might not be the best idea. Okay in getting a response however you may find that it makes the situation worse by his modeling his behaviour on being smacked etc etc. Good to hear the timeout is working. Keep persisting with this I would say. It might help with giving him some boundaries. It seems like he might be coping with a bit of change at the moment. Congratulations on your beautiful family.