Just to add on to what everyone else has said, I've been doing physical therapy over the last year and a half for my shoulders, these are the big things I address:
Foam roll Pecs and Lats
Lacrosse ball roll ant/post shoulder
Scapular Wall Slides
I typically do these as a part of my prehab in addition to my warm up because I have so many issues with my shoulders, but you can break it up like this to make minimal adds pre, during and post workout.
Foam roll and Lax ball roll
Scapular Wall Slides - During one particular exercise that gives your shoulders trouble do ten in between each set, achieving around 40 total slides
Lax ball roll again
I have a 2 a day rotation with a separate rehab and warm up that I do before my warm up and workout in the afternoon that includes all of that, I'd be glad to share all of that with you if you're interested.
In the end, all it comes down to, is just you. It's not a question of if your coach can hit it, your best friend, or the guy next to you... The weight is at your feet and now it's your moment, can you do it?