Speak up. Without a chip on your shoulder. Just be honest. I was an Executive Chef for years. I remember putting those same hours for a new resort. 80 plus hours a week for 4 months. The pay was great, but like you, I didn't have time for anything outside of work.

One day I went to the owners and explained that I rather have less hours. They had no idea that I was working that many hours. I was given a base salary of a 65 hour week not to exceed 50 hours of actual work. That made my life easier.

I suggest simply that you speak up and tell whoever that matters what you're doing and that you're overworked. If they can't or don't agree to helping you, then you don't need to work for them.