I had reverse total shoulder in 2019 was extremely long recovery was in physical therapy for a year and when done at therapy still had some pain. Therapist told me to keep up the exercise regimen for life. It did get better but I sometimes overdue and my muscles get ticked off. Hopefully you have been back to surgeon to make sure all parts are still in place and are still working otherwise I’d recommend finding a good therapist that knows how to do dry needling which I find myself going back for every month to two months and it works as does taping the shoulder for me. These parts also, apparently, in most people don’t last forever but should last longer than yours. I find it hard to accept limitations having a reverse total shoulder which is what gets me into trouble sometimes, but to date my therapist is able to fix it each time so far. Insurance does not cover dry needling so I pay for it out of pocket but well worth it so far. It beats living on a aleve during those episodes.
Exercise regimen is so important to keep going. I do pulley everyday, weights twice a week, gym machines I’m allowed with weights twice a week and therabands twice a week
Good luck to you.