Have you tried using Marc's foot splint at night?
I can't seem to fall asleep with it on, so after an 1.5h of not sleeping I take it off. It's way too big for me, so it makes the blanket weird and I can't turn from one side to the other easily...
This is true! I also found it hard to sleep with, though mine was a bit different. Eventually I just got used to it!
How long did you have to wear it until your problem got better?