After two and a half weeks off, I decided to just go for it and see how many I could do at once. I got to 60. I probably could have squeezed another 10 out, but I wasn't very mentally committed or confident. I felt great at 40, good at 50, and pretty shaky at 60. Either way, there's no way I was getting to 100. Still, from 20 to 60 in 6 weeks is great. I'm not as interested in being able to do 100 at a time now, but I am interested in being able to do the difficult columns of weeks 5 and 6, so I plan to keep on that. Maybe in a month or two I'll get the 100, but that's not really the motivating factor to me.