I know how much bad shoulders can interfere with the simplest things in life. I prefer to sleep on my sides, right or left, it doesn't matter. But my danged shoulder wakes me with pain about 45 minutes into my doze. I roll over and get another 45 before THAT shoulder wakes me with pain. And so it goes all night long. If I sleep on my back, it's worse since Bunny only has a 30 minute tolerance factor for snoring.
Doc at the VA told me he would recommend a "reverse shoulder replacement" for both shoulders. Problem is, that limits your ability to lift anything--40 lbs from floor to waist; 20 lbs above the waist. That sucks. I have range bags that weigh more than that. Besides, I recently read that the reverse shoulder replacements are having a real problem with many requiring repeat surgery. No thanks.
Only thing I have found that helps is something Bunny came across in one of her "new age" forays into yoga, essential oils and other nonsense. She gave me a bottle of copaiba oil that I massage into my shoulders a few times a day. When I started, I could hardly comb my hair. After a couple of days, I had nearly full motility of both shoulders. It doesn't stink, burn or generally screw things up. It's not like any sort of liniment. It's just a lightweight oil harvested from some sort of Amazonian tree. There is a slight scent to it, but hardly noticeable. After about a week of 3 or 4 times daily, I reduced it to once or twice. Then, down to every other day. Now, I use it just when the shoulders start hurting. It hasn't "cured" anything. My shoulders are still a very weak link and if I have to take stuff down from a top shelf, I will probably get some help. But in daily life, the pain is mostly gone and it beats the crap out of surgery.
The stuff is not expensive. You can find it on Amazon. And, it may not work for you as well as it has for me. Still, it's a cheap fix if it does. Oh, and with the oil, I get a couple of hours of sleep on each side before I have to groggily roll over to the other side for another couple of hours sleep. And, I can still shoot my hand guns and my rifles. I did get rid of the .44 Mag Redhawk, though. Just too much kick. My carry gun is now a .357 Mag snubbie and I can shoot that all day. Same with the AR 15... No pain if I oil up the morning before I go shooting.
Good luck, Tom. Let me know if the stuff helps you.
Crusader Rabbit