G.N.
Does he only hit when he is on your lap? My son hits me when I am holding him he hits me and I put him down on the floor and dont talk to him or look at him for a minute, even when he gets up and stands next to me and cries then I say well you need to be nice to mommy and not hit that hurts me. I heard that giving them a time out every minute of their age, so a 1 year old gets a minute, I only leave him in time out and let him cry for a minute even if he doesnt sit where I told him to just ignore him for a minute.
Its been working slowly, they hate to be ignored.
Hope that helps
G.