Hi Paul,
You can do a lot in a pool, but I can’t understand how you could be in a pool and not be able to do other ROM and exercises. As for sleeping, it gets better as the pain improves. I must say though, when the brace can come off, you will be very happy. I miss my horse. I simply got hurt getting off and it has cost me a summer. I can only advise doing your best until you get well.
Eileen