sleep less and live more

My problem is that I tend to sleep for hours in the day on the weekends. I have a high stress job, so I think I just crash on weekends and can’t do anything. I’ve talked to my doctor about my exhaustion, but nothing seems to be obviously wrong. Part of it is also that I stay up late during the week getting work done. This can’t be healthy. My husband and son stopped including me in outings because I am practically in a coma.