It seems to take forever to make any progress at all! I'm sure we all feel that way. My last therapist caused my shoulder to separate again (overly ambitious therapy) and I thought it would never reheal. I have tried sleeping on that side but, it was painful so, when I needed to close the window over my bed last night, I was thrilled to find I could support myself on that elbow and shoulder to do it without pain! Hooray! There is hope...it justs takes perseverance and time.
Btw...I can hold a flashlight in my left (bad) hand and squeeze and twist the light on with my right...new strength! I thought I would have to throw that flashlight out and now I can use it again!
All I can say is keep the hope alive and keep trying.