Writing is not always writing.
Sometimes it doesn’t look like writing at all. When I’m deep into a project and actively writing and it’s going well, I absolutely believe writing every day is a reasonable axiom. But it’s not always like that, especially if you haven’t started writing yet, or even sometimes in the middle of a project.
Because sometimes you’re not going to be writing because your subconscious knows you have more thinking to do. Because writing is mostly thinking.