Hi I dislocated my shoulder 16 years ago. I have dislocated it several times since although it has happened less as I have gotten older,<sigh>
I was offered surgery but declined because I was not an athlete and I haven;t suffer any pain...along with that I have a neck issue that flares up from time to time and agravates the shoulder, when I exercise I find it is much better, I used to go to the gym and do some weights but since having kids I have cancelled my membership, I have now taken up running about 2-4 km 3 times a week and I feel just the motion has strengthened my shoulder and I can sleep better. Can;t say much for my knees though!!!
Anyways keep up the PT you dont have to attend a session just do the same exercises at home ,I used to lift cans of beans!! , when I first injured my shoulder the drs didn;t give me a good prognosis BUT with heavy PT I regained about 90 % strength and use and still maintain that today
My dr said as you get older the muscles will tighten so as I age my shoulder should not dislocate much at all .....