You are very committed! I am not sure I would survive writing on a schedule with exercises. But you got me to thinking about how often I write, probably about 2 hours a day, yikes. I write longhand and just fill up notebooks, one after the other (there is always one at hand and a spare 5 minutes). I probably throw away at least half of it all. Unlike music, I think it's probably harder to know when you've hit the right notes. I read some things aloud, which helps with pacing and dialogue. Everything I was taught about how to write (especially academic writing) only made me write awkwardly and badly. Fanwriting was very freeing to write; the first thing I ever felt I could write (I am a very, very inarticulate person, so feeling that I could convey something, that was a rush). Good luck! *hands you a notebook*