There was a time when I thought sourdough was this intimidating, terrifying, impossible thing that required constant work and dedication.
Today I use almost zero commercial yeast. I've found that I can ignore my starter for a lot longer than I had thought. The night before I want to use it I give it a good feeding and in the morning it's ready to be fed again or used right away. I'll usually feed it again to get a nice sour tang.