My 11 week old puppy finished his battle with parvo a week ago and is back to his usual endless supply of energy. Ive been trying to expend it best I can in an apartment (as he cant be out on walks due to age/contagion risk). But he's developed a concerning habit of barking and nipping at my hands in frustration. He wont redirect to toys, leaps at my face, and bites my hands quite hard. I firmly correct him by cupping his chin and saying no, or ending play when he gets too worked up, but that leaves us both frustrated! I dont know if its aggression or just puppy play (he will flip on his back and isnt too stiff) but it worries me nonetheless and still leaves me no way to get his energy out. Has anyone dealt with this? How do i get him to exercise and play with toys rather than him ignoring them and biting me?