I prepared for a decade to graduate in CS in three months
I think the subheading may be a better title -- 'This is the story of how I prepared for a decade to graduate in 3 months.'This seems feasible only for a specific set of people: those with previous experience & looking specifically for the credential and not so much the learning experience that comes with a traditional 4 year degree. Not to take away from the author's achievement, I just think it would be misleading to imply that this is a path that most people can take.