ahh, kittenhood! The good news: it won't last, he WILL grow up. Reach the "Terrible Twos" and all that ha haaa. And as he is a vocal boy, then when you tell him "OFF!" he will give you back talk! My Chestnut is now 11 years and STILL gives me backtalk on a regular basis.

General rule: cats are crepuscular, most active at dawn and dusk. But yes he is excited and playing like a nut all night long.

Do you have any catnip mice? These are quite toys. He will still be running, but he will have it in his mouth to stop the "screaming." He heee.

Those toys on strings he should not have access to without supervision. Cats have "hooks" on their tongues. Once they get a string, piece of yarn, in the mouth, they can't let it go, it must go in and down and be swallowed.

I hope others have more ideas for you!