Sleep and stress

We all know how important is sleep but sometimes a busy day could lead to few hours of sleep and of course it will lead to stress my question is what would be the affects to the development of our penis? Would it impede? Or worst shrinkage? (Correct me if I’m wrong with this “sometimes overdoing can lead to temporary shrinkage”) can you give an idea how long do you guys sleep? I just want to know if you still make great gains even without proper rest.

I’m busy some days 3 hours and some days I sleep to 7 hours