I like the 20 min passing approach, and the more I practice PR-ing, I am noticing that it takes fewer and fewer passes to get what I want. Unfortunately, a 20 min pass might only cover 1/3 of a 200 page book for me, which means a whole book's pass is 60 mins. Does this mean I'm going too slow for the amount of pages, and should be speading up with more layers? Or does the number of pages in 20 mins not matter that much?
