I think you answered the question yourself -- you've been letting him get away with a lot since
his operation! I think you probably just need to take control of him a little bit more like you used
to.
As hard as it's gonna be, don't baby him because he feels bad. It will only make the
situation worse. I think maybe when he's biting you while you're doing his nails, just don't
back down. He knows he can use his teeth against you now. I wish I had more advice for you but good luck
