My hands feel your pain too! Jax is 14 1/2 weeks old and he bites ALL OF THE TIME! I have tried chew toys, teething toys, wet washcloth, a sock with ice cubes in it....etc, etc, He currently likes the belt I am wearing while he sits in my lap. Oh and my computer now has bite marks all over the corner from this little monster
Hopefully, he will grow out of this......and hopefully your pup will too.