For decades I’ve been preaching it to myself and others: writing routines don’t have to be long. Devote just an hour every day to writing, even if you cannot get beyond a few words, or you’re writing nonsense. If you can’t write a word, at least read or think about your writing.
Don’t underestimate the power of an hour.
Just do it. It works. I wish I practiced what I preached more regularly. But I fully believe it nonetheless.