Um, no, I was then, in the follow-up taking your meaning of "overly developed" according to your statement of:
"what i meant by overly developed is that sometimes i feel like my back and shoulders are doing the work even if i try focusing on my chest all the way through my ROM"
Since I'm not there for your training and you are, and not even seen a video or anything, I wouldn't remotely presume you incorrect that you feel like your shoulders are doing the work in the bench press. That might be.
However, as for an idea that you should let off training back and shoulders, by no means.
Yes, learning how to target exercises so they really are doing what you want, really are working towards achieving your goal, is very important and I think you are wise to recognize that they may be a problem area for you with chest. But that doesn't mean arm, shoulder, or back training need to be compromised for the chest to come up.
The only time that might be the case would be if really excessive training effort was being put into back, shoulders, and arms presently, leaving very little time and effort available for chest. In a case like that, it wouldn't be a matter of leaving off back, shoulder, and arm work, but just getting them to a more reasonable proportion (if they were getting too much of a lion's share in the first place. Which I doubt is the case here actually, there is no sign of it and it's hard to find those that train back too much compared to chest, but it could happen with another person.)