Time off like said, longer than you want to. Look into TB500 to help heal it also. Dont consider aas use, you will do more damage, trust me. Been there, done that and tried working through the pain. Had surgery
The TB-500 can help a lot. There are several logs here if you search for them. Learn to do cable and LIGHT rotator cuff exercises.
The steroid shot the doctor does is not the same as aas, it's not anabolic. It reduces inflammation but also you should not do any excersises for about 1 week after the shot, you can do more damage and need to give it time to do it's work.
Personally I would stop the cycle and do a PCT. Honestly you will do more damage than good.