OP, sorry about your injury. Im in a similar boat right now with a recovering knee.
You cant learn to wrestle in a month, and you cant forget in a month either. The stuff that was truly drilled into me i still have on a very primal level. ANYONE who was EVER a wrestler worth their salt will have a sprawl reflex and at least one move in the bank, forever.
But you WILL get rusty. But that shakes off. When i got back to it, i was to loose on throws and needed to adjust. I would say, if you are worried about forgetting in a month, you havent brainwashed yourself with your moves well enough.
Also, go through the motions in your mind, and to the extent you can in your body. Everything starts in your mind and it will take.your body anywhere it has the discipline to go. Live the lifestyle that turns you into what you want to be. In wrestling/fighting recovery is an unfortunate part of the lifestyle. Good luck!
Also, whats all yalls favorite moves? Mine were firemans and jap whizzer.