This might not be helpful, but it sort of depends on the course. Most of them are paced such that I can keep up watching them at 1x with regular pausing because I’m a bit slower with the menus. Some of the courses are designed to show you principles and you practice them on your own via assignments. The OG animation bootcamp from 2016 took me over a month of steady work because I had to repeat a few of the assignments–plus fundamentals are some of the hardest work to do, in my opinion. Sometimes I feel like the courses are impossibly long, but it’s very worth the time invested because CGCookie courses continue to be some of the most thorough and best explained that I have found.