Hi there.. Im not sure if this will work for you but it seemed to work with my Mojo... when he was in his biting/nipping phase, I'd play with him, using my hand to touch his mouth and nose. Ofcourse he will bite and when he does, Id say "ouch!" take my hand away from him and say "No" Id stare at him while he gives me his yorkie look (hehe) Then I start playing with his mouth and nose again.. he'd try to catch my hand ofcourse and whenever I feel his teeth, Id say "ouch" take my hand away and then say "No" after 2-3 times doing this Mojo got the point... Somtimes Id even put my hand against and inside his mouth. If he puts pressure on his bite Id say "ouch" take my hand, say "No" and stare him down again. I did this a few more times, with me initiating the play or inviting him to bite. He doesnt put pressure anymore and whenever he forgets, I just have to do it once and he'll remember that he cant bite down.
I hope this technique works for you.
