I've been experiencing several classic symptoms of a rotator cuff tear/inflammation, most notably shoulder pain when I lift my arm over my head. For totally unrelated reasons I haven't been able to lift for about 1.5 months, and the pain has gone down noticeably in that time. I'll have the opportunity to resume lifting in about a week, but should I? Looking for advice on how long I should wait, whether I should do rotator-specific stretches/exercises, etc.