I think you need to take more photo's of him. He's gonna be full grown before yyou know it. Have you flipped him over and seen his boy bits yet? When you do it's time to get him desexed.
This thread will likely get moved to the main forum as well.
Have you tried offering him toys to help with his chewing?
You can post a new thread here as ask the question and get lots of great suggestions from people.
1 more month and he's no longer a boy! That might help as well.