Having done this 5x times now. My advice is the same I got from one of my first VCs @FirstRound...
Pay yourself as much as you need to not be distracted by anything that would slow you down. It is different for different founders and for whatever stage they are at in life. But if you are a founder with a family, that is gonna be different from a founder fresh out of college.
Obviously you want to spend as little as possible, but not to the detriment of you lacking focus and dedication because you can't pay your rent.
Pay yourself as much as you need to not be distracted by anything that would slow you down. It is different for different founders and for whatever stage they are at in life. But if you are a founder with a family, that is gonna be different from a founder fresh out of college.
Obviously you want to spend as little as possible, but not to the detriment of you lacking focus and dedication because you can't pay your rent.