Oh, almost didn't want to respond, this question hurts. Still recovering from my second shoulder surgery, and despite ten months I'm still hurting.
However, I recovered 100% from the first surgery ten years ago, and that one was more severe, an open repair with lots of sewing involved, etc.
What have I learned? That you really need a PT who knows what they are doing with strength athletes. The first time, I ditched my first PT after three months for someone who really knew what they were doing, and that second one took me all the way to pain free, full flexibility recovery.
This second time, I thought I could do it myself, after all, I knew the exercises. Plus, I thought with a home e-stim machine I could mimick what they gave at the PT center.
I was wrong. FIND a PT who has rehabbed strong athletes, period. Yeah, you can take tons of fish oil, glucosamine, topical creams, NSAIDS, sports massage, and other stuff too, but all that won't get you to benching heavy again. In many cases muscle imbalances which contributed to the shoulder problem in the first place have to be corrected in rehab, and that's tricky.
Good luck, it's certainly do-able, and I am inspired at your activities at 57. Doc