My Vit. D level was 32 or 35 (can't remember which) back in December. This was after months of supplementing with about 2,000 IUs per day. May I ask what your levels are? I haven't noticed a difference in the RLS before/after I started the supplementing. My Dr. says my levels are absolutely fine and to stop supplementing. Not sure what to do there.
The restlessness has been coming and going unpredictably for over a year.