Hello there I'm in the same situation as you, with the sharky tough boy, 9 weeks old It really sounds like your on the right road to me. I ALWAYS keep a toy in hand for my boy and shove it right in his mouth as he lunges at me. I think we just have aceptionaly rambunctious boys, but it WILL pass. Keep up with what your doing and I'm sure he will catch on. Oh and the talking they do,LOL, I've never heard sounds like that before, I wasn't prepared, especially when he's having a tantrum.
Good luck and let us know if you find something to help.