Can you lean over and let the arm dangle loosely at all?
They didn't tell you or give you any movements to do at release time?
I would think some easy slow swaying movements with arm loosely at your sides would be good, just to keep things free, lubricated and not locking up.
Adjust as needed if there is pain.
Wth the added Pec minor release there might be more limitations than others have described.
You might use the search feature to find specific posts about pec minor tenotomy post op recovery..
or a web search brings up some old posts too.
https://www.google.com/search?q=pec+...-a&channel=rcs