Answers: I think the minimum to neuter a kitten is around 6-7 months. Most of kitten are really playful and aggressive at this age. They will calm down when they attain older. My both cat run around the house when they was 3-4 months, now it is scarcely to ask the move around!
It might help, besides if you don't get him neuter he'll eventually start to spray, and you don't want that. 3 months sounds a little young, but it depends on your vet. Mine won't spay or neuter until 5 months.
Neuter him around 6 months. If you do not he will spray and your house will smell approaching pee, your bed, pillows, clothes ect. YUCK He is a kitten, all kittens do that. They get a lot of enthusiasm at night and start to play. Only age will calm him. PLEASE SPAY AND NEUTER ALL OF YOUR PETS. -Thank you from all of the unwanted animals surrounded by shelters!