Shoulder issues, first i am no expert. I am just looking for solutions. After many months of problem/pain i tried rest, work around, more serious rest and yesterday evening i moved in rehab mode. Broomstick stretches might be helpfull it is way too early to tell(i just started them but you can search (i will add a link at the bottom). I do them using a scarff allmost as long as i am tall.
You can look for the post from olinerules87, about the fith from the top.
Good luck !