I'm in the middle of an experiment - I only have to write for 10 minutes a day. It doesn't sound like a lot, but I've been able to put out my first few posts on Medium and put lots of notes together for another project, plus write a ghostwriting project, all in the last month. This is after years of being blocked as a writer.
It's the steady consistency that marks progress, even though the grand efforts are exceptions to the rule they don't give you consistent outcomes.