For a long time I slept in "Superman flying pose". Any pressure at all caused tingling after about 5 minutes, so that was the pose with the least pressure anywhere. Even the hands had to be flat.
In the improved better days I could sleep on my side, but often there I kept having a sense of falling over, as if the muscles were too tired to support being in that position.
It has always helped to start side sleep with the currently active nostril on top. They alternate so generally one is in use while the other is clearing.
I still have regular occasions where there is a stitch in my right side just under the ribcage. Gallstones have been ruled out. Since the dull pain is stronger based somewhat on fatty meals, I suspect an irritated gall bladder. When this happens I find sleeping right side up is uncomfortable but sleeping on my right side, which applies pressure, works.
I also have lots of persistent itching, mostly in the arns, the kind where almost a single pain sensor is expressing its displeasure every few seconds for days on end. I find sleeping over top of the itch with a bit of pressure often calms it