If you're building products as a side hustle, what is your daily time allocation?

Not everyone is lucky enough to work full time on their dream project. From my experience, a significant number of people use to start building things as a side hustle (a must have 9-5 for paying bills is a bitter truth) and then gradually shift towards financial freedom. If you're building products, services or platforms as a side hustle, you have my full respect. It's not easy to work on double shifts for a long term vision. I'm curious, how much time you're able to allcoate on a daily basis for your dream project or the business that you're trying to build? What challenges do you face due to this and how do you overcome them?