Hi!
Welcome!
Yogi is 4 months old and all boy! He loves to bite everything too. Whenever he starts chewing on me I just put my hand on the back of his neck, give it a very slight pinch, just enough pressure so that he knows it's not a pet, and say, "shhh! No!" then let go and ignore him. If he tries to bite again, I'll do the same, just a little more firm, then take him to a toy that he is allowed to chew on. If he sits there and just looks at me and not try to bite after the first No, then I will reward with a pet/hug/cuddle something to let him know that
not biting gets good touches from me.
He's very smart and picks up on what's ok and what's not pretty quickly. i.e. - what's ok is to then go chew on Daddy 'cause he doesn't care - what's not ok is to chew on the Momma.
Post some pictures of your Tobi when you can!