Okay, so I have another update. My health situation is improving and improving.
Some things are quite clear to me know
a) the observations I made about CBD are no fluke. My sleeping pattern is getting more normal every week.
b) my daily CBD dosage is approx. 30 mg/day. When I wake up I take about 10 mg and the rest around 8 pm.
c) there is one Cannabis strain who is especially beneficial for me. It does not only have potent analgesic properties but is also the only product I know that can make me sleep. Here in Germany the strain is called "Pedanios 20/1" ... however the exact same strain is also available in the U.S. and Canada under the "LA Confidental".
If you want more information about this specific strain, I would recommend checking out this website where you can find over 1.000 reviews about this particular strain alone: https://www.leafly.com/indica/la-confidential
There is also this other website https://www.wikileaf.com/strain/la-confidential/
which rates it 10 out 10 for insomnia and 10 out of 10 for making you sleepy. Knowing how extreme and bad my insomnia, I never would have expected that it can be treated with Cannabis, considering that even Benzodiazepines don't work for me.
I would say "LA Confidental" is the right product for you when your primary RLS symptoms are related to pain and insomnia while you are already getting opioids but don't get enough relief from the alone or have ran into opioid tolerance issues.
Another aspect to consider is that "LA Confidental" is a high potent indica strain. The average amount of THC in the product I can get here is around
~ 23% THC, lowest I saw was 21,9 and highest 23,8%. CBD is lower than 0,1% ... so that is why I supplement with CBD-oil.
So ye, in total I tried over 10 different Cannabis strains now, including high potent Sativa strains with similar amounts of THC. And what I learned from this is that while THC is an important variable to judge the effects of a specific strain it doesn't mean too much. There is a trend, more THC equals better pain relief but I am sure that even a variety of LA Confidental with only 15% THC would still have better analgesic properties than a Sativa strain with 24% THC.
The other strains I tried all have some interesting effects. They great to relax in the evening and limit the amount I have to take from more potent strains. If I would use LA Confidental in the early evening, I would not be able to function. I would just numb away. So currently I use two Sativa strains (Bedrocan and Red No. 2 where especially the Red No. 2 seems to have antidepressant and mood uplifting properties)
The more I learn about Cannabis, the more I am convinced it will become standard treatment for severe RLS, especially in combination with opioids.
If you have "untreatable" insomnia like I had, Cannabis might be worth a try.
I don't always like and enjoy the heavy sedation LA Confidental can produce but when you are suddenly able to sleep 8 to 10 hours without interruption, it is not that big of deal.
Oh, and on average I seem to tolerate Sativa strains a bit better than Indica, but when Indica varieties seem to work, their medicinal benefits seem to be a bit bigger than Indica.