In my dreams, I don't have MS and am able to get around okay

Nope! And I have insomnia so it took my dreams too. Now my dreams are quick

I used to be a lucid dreamer

The ones I can remember, I don't have it, as far as I can recall.

I dunno! I very rarely reach the state of sleep that I dream in, or that my brain at least has any recollection of a dream upon waking up. That said, every once in a while, I will catch myself in a dream state of sleep and will wake up remembering something unusual just happened. I typically don’t have a clue whether or not I was disabled in the dream or not, so probably not!

I dream I can jump and run.