Though my disabilities are no where near what you have (spinal bifida occulta and bad knees) I know I have limited myself to what projects I am involved with and how I am involved with it.  I tend to direct more and if I am involved with choreography for a show, I assist another choreographer and work out the steps with them instead of over burdening myself. 

Now is the time that you rely on others for support and help.  It gets frustrating when you feel that you can't keep up or do what you used to be able to do.  And then there is the feeling that others are taking over for you.  You'll have a lot of transition coming up and it's important that you get the support that you need.