Advice for aching wrists, joints

I wrote about my situation with joint pain a few years ago, and it still applies. I've been on Letrozole since mid 2017 and also have joint issues. What does muddy the waters somewhat is that I have three other connective tissue autoimmune conditions which affect the connective tissue throughout my body, joints, tendons and muscles in particular. What helps me most, is to keep joints straight. When I'm in bed, and on my side. the wrist of the hand on the bed side, tends to drop in an extended position, so I prop one of those little crescent shaped neck pillows you get from the two dollar shop (filled with small polystyrene beads)under the wrist to keep it straight. The wrist on the upper side tends to drop the other way, towards my arm, curved inwards. This one I straighten with a similar cushion perched on my hip where the arm is resting. If I move that upper arm for the wrist to rest nearer my head on the mattress, I position the cushion so it keeps that wrist straight. For my hip and knee pain, I sleep with a memory foam pillow between my knees so that the upper leg isn't pulling the hip in a squiff position. It all sounds very complicated, but I become used to turning with my pillows and that is the only way I'm not in agony with the joint feeling as if hot lead has been poured into them.