Hello, my 6 month old kittens scratch my sofa quite often. They don't do it intentionally as they make good use of the scratching post. However, they do it when they're about to jump onto the floor to pounce at each other etc. Is there something I can do to protect the sofa as it is soft leather and was expensive. Will they stop clawing any time soon?

Also, they play all night when we're trying to sleep, will they learn our sleeping patterns and calm down at night? One of them, the male, likes to get under the covers and scratch us too, which means I have a disturbed nights sleep every night!

Please advise!!