Hi Soop
I've had RLS virtually all my life, probably my earliest memory was aged 5 and I'd had spinal surgery and was in bed for several weeks - I'm 62 now. My grandma had it, but in her day they used to call it "fidgets"! It can be hereditary and occasionally I also get it in my tummy, chest and arms!
I really sympathise with you and what I've found more recently is that it kicks in when my legs and feet get too warm in bed. Some nights I can't get to sleep because my feet are freezing cold, so I put on a pair of socks and manage to doze off, but then my feet get too warm and that triggers the RLS and the involuntary movements in my legs get so bad the whole bed shakes - it gets on my hubby's nerves but he knows I can't help it, bless him!
I find it helps by lifting the duvet off my feet and lower legs, you know like when they raise the covers in hospital if you've had surgery to feet and legs. This stops my legs and feet getting too warm. It may work for you, but the only other thing that helps me is when I can't stand it any longer I go downstairs and make a cuppa and take a couple of paracetamols - that does help, but I've never been prescribed anything for RLS by my GP.
Sorry for not being able to give you anymore advice.