I’m kind of in the same boat. I tried various meds years ago & for the most part it was a disaster. Only one thing (a short-acting prn med) worked for me. I took it on & off for years with very consistent results, but lately (hormone changes?) it just doesn’t work the same. Yesterday a half dose knocked me out for hours. I haven’t needed anything for years, but now I do, so am checking out CBD. I’ve tried it for pain & find that results vary depending on what form it’s in. I would expect results at a much lower dose than what you mentioned. Everyone is different though & I tend to be kind of sensitive to meds. I’ve tried smoking it (helped w mood), eating those little chocolate hearts (I think 13 or 15mg- helped a lot w migraine, but when I tried it for mood it seemed to make me a tiny bit nervous), and eating part of the gummy worms(each worm =100 mg- I took abt 18 mg). The gummies didn’t make me nervous, but took longer to work for pain and the effects didn’t last as long. Though I took them for sciatica, which is a different kind of pain. Too bad, as they were cheaper.
I haven’t done enough consistently equivalent experiments to know how it will work for me but I plan to experiment a bit more. Someone bought me a bottle of the oil but I haven’t tried it yet...