Shoulder Impingement Recovery Plan for Powerlifters

I have developed a sharp pain in the front of my shoulder whenever I am at the bottom of a bench press or doing any lateral raises. I am pretty sure it is subacromial impingement. I have started a rehab program focused on strengthening my serratus anterior and lower traps.

Are there any specific exercises that worked wonders for you? I have been doing a lot of Dead Bugs and Scapular Push ups. I am also trying to improve my thoracic extension so my shoulder blades have more room to move.

Should I stop benching entirely for a few weeks or just use a restricted range of motion? I have heard that using a football bar or a Swiss bar can be much easier on the shoulders. If you have any tips on how to keep training around this I would love to hear them.