What sort of business are you running? Are you under time pressure from competitors to get the product out? Do you personally have monetary pressures? How do you feel about this work schedule, and does it feel sustainable?

The point I'm making is that you are unique. The fact that you're an independent founder is the one thing you share in common with other independent founders. What works for you will be a function of your business, your temperament, your personal life, and a variety of other factors.