Mine is moving loads more now, but stretching involuntarily above my head in the morning gets me every time!
Slowly slowly catchy monkey. You need to move it and keep it moving but it is absolutely possible to over work these things (as my permanently bent little finger attests). Do not over do it.
With your shoulder take lots of care getting it right.
Following an initial dislocation* followed by significant “ah it’s fine now, I’ll do much more than the physio says I should” my left shoulder is dodgy as an Arthur Daley deal.
Mine came out last time turning the page of a book. The time before that was doing the strengthening exercises following on from the previous incident.
*the dislocation hurt a lot. Being told I’m old now, by a medical professional, at 34, that hurt more.