Is it a full dislocation or a pop out and back in again?
ive done both shoulders properly, one kayaking and one skiing. The Skiing one was put in a full body cast in austria and immobilised for 3 weeks then in a sling. The kayaking one was in a sling from the off.
The skiing ie full immobilisation has been the strongest shoulder since, however i lost a lot of muscle tone and mobility that I had to work hard to regain. The other slinged shoulder has always been weaker although still fine for kayaking but prone to a bit of tweeking. The main problem with the sling was the tension it caused in the neck and upper back – this was quite hard to shift.
Best thing I did was see a sports physio asap, however a little thing that definitely aided recovery was learning to juggle with squidgy juggling balls, do it in front of a wall so they wont roll away. There is a lot of gentle shoulder movement when juggling
In real life the last time I popped my weaker shoulder it was stiff for a day or two then improved. Once settled I then worked gently on my stretching and strengthening exercises.