I've been trying to go through the OG13 and do every problem because it seems to be the best way to prepare for the GMAT(from what I've read on the board). I'm starting with the problem solving section and it seems that nearly all the problems I'm doing are going into my error log
because I get it wrong or take over 2.5 minutes on the problem. Is this normal? Is it normal to have to do most of the OG problems twice or more?
I feel like I'm progressing very slowly in my studying. I've only gone through 45 problem solving problems in OG13 and I've spent about 3 weeks doing just that. Just a little background, I've been studying for about five months. I took the Manhattan GMAT class
and followed the syllabus, and I did one attempt at the official GMAT in late July. After my first official score was 560 I decided I would do every single OG13 problem.