Rehab your shoulder & scapula
It is very common for your scapula to be frozen in place after paralysis, you can break that with exercises
beginning shoulder activation
Ask your shoulder to push your arm around after it is already set out straight.
Shoulder exercises
You probably need to start super small with tiny movements that will help break your shoulder out of paralysis:
Weight bearing is the most simple and effective exercise for shoulder activation
@m3ganb3th Replying to @meegs_s01 top 3 exercises that helped my shoulder! Weight bearing, shoulder raises, and lifting my arm! #poststrokerecovery #lefthemiparesis #subluxation #shoulderpain #paralysis ♬ That’s So True - Gracie Abrams
When you have much more movement, you need to try to get that scapula sliding
Once your shoulder is strong enough, you can do push ups with the golden gate brace on. Start with as few as you can handle and build up over time.