I know it's hard but you must move your affected limb, start as slow as you feel comfortable with

if you can't move it or it's too painful then brushing or stroking the limb will at least help sensations to pulse

you and your pm are a team and if you feel mentioning CRPS could help at all then I'd bring it up casually and just see if he's heard of it

keep us updated it sounds like there's a lot going on here, don't be afraid to touch where it hurts that's incredibly important

I wish you all the best