Please tell me where am I going wrong?

Hi Everyone,

I am one and a half months into my preparation and I have one very important issue which I hope one of you guys will help me resolve. I have charted out my goals and the path that I need to follow to get there (thanks to reading a ton of posts here) but I am now falling behind on my schedule even after putting 3-4 hours of diligent studying on weekdays and 6-8 hours on weekends.

Every blog/post that I have read says that "I(the author) completed Manhattan SC in a week ", but after one week all I was able to complete was just half of Manhattan SC. Here is what I do:

1. Go through each and everything that given in the book, making notes as I proceed.
2. Solve each and every problem, understand the solutions.

On an average I am able to complete 20 pages of any given book each day and 40 on weekends. I have still to start up on "RC", "CR", "Word Problems" and "Algebra" (I use resources from Manhattan)

According to my schedule I am to complete strengthening up my "Knowledge Base" by September 12 2014 post which I am to concentrate only on OG 13 and taking tests.

Please help me understand where I am going wrong. I have scheduled my GMAT on October 12 2014 and I would like to spend that last one month taking as many tests and completing OG 13 as many times as possible.

Also, let me know if there are any alternative methodology that you guys would like me to follow. One of the changes that I have decided to incorporate is taking up a couple of tests every weekend.

Thanks a lot.