My MRI was diagnosed as rotator cuff, bicep combo. Just had surgery on leap Day, about 4 weeks ago. Turned out I was a atad luckier, my Bicep fell off with the slightest touch while in there. They left it unattached, no repair. My rotator cuff was damaged too, but not severely enough for full blown surgery. So he scraped the crap out of the underside, to agitate it into forcing it to try and heal on its own. I also had a big bone spur cut off.
At first I assumed all would be much faster recovery, but as others have said, these days they want super slow, cautious recovery, even in my case. I had 2 weeks of sling, no nothing but pain meds. I have yet to be able to sleep in my bed or flat on my back. Still in comfy recliner. My last two therapy sessions (i've now had 4 in 2 weeks) wore me out and this last one Friday has me hurting a lot. I am told, so far, that I am out untill at least May 222. Surgery was Feb 29th.
My bad motorcycle wreck was a year ago March 23rd. Had slight tear and pain then from wreck. Then about 3 months ago on two separate occasions with 3 days, i heard a major popping in my R shoulder. One from lifting my 40Lb squirming dog, and one happened at work, lifting cases from up high. A few days later, second scan and they saw much more damage, thus the surgery. I'm still lucky it was not full blown rotator cuff, But they almost treat recovery as such.
Good luck, do not wait to get fixed, the more damage you do, it is often harder to repair they say, and explained the multiple reasons why and how come it could be.