It’s not too late to sign up! The course runs for 8 weeks and requires about 3 hours per week.
It uses articles, videos, quizzes and forum discussions and you can submit your own writing from time to time.
I signed up even before I knew I’d get the space on my MA. Three hours per week seems doable. I’ll at least give it a try, as a couple of professional tips really can’t hurt during NaNoWrimo!