Ruth,
I'm praying that you have a good report and good weight loss.
Exercise...since you can't walk. sit in a straight back chair and march in place. Lifting your legs as if you are marching... yes it really works :D it is strengthening your legs. There are numerous chair exercises that will help you with your "mobility". Try using stevia for your non-sugar sweetener. I am severely allergic to all artificial sweeteners and Stevia gives me the sweetness without affecting my glucose levels :D. Hang in there friend.. I want to here from "less" of you :D and you will reach that goal.