What is your goal score? Also, round 1 deadlines vary from school to school. What is the earliest deadline for the schools to which you're planning to apply? You mentioned books - are they our GMAT books?
I need some more information from you about your strengths and weaknesses, as well as how you have been studying, in order to advise you further.
First, read these two articles:
http://tinyurl.com/executivereasoninghttp://tinyurl.com/2ndlevelofgmatThink about how what you've been doing does and doesn't match up with that and how you may need to change your approach accordingly.
Then, use the below to analyze your most recent MGMAT CATs (this should take you a minimum of 1 hour):
http://tinyurl.com/analyzeyourcatsBased on all of that, figure out your strengths and weaknesses as well as any ideas you have for what you think you should do. Then come back here and tell us; we'll tell you whether we agree and advise you further. (Note: do share an analysis with us, not just the raw data. Your analysis should include a discussion of your buckets - you'll understand what that means when you read the last article. Part of getting better is developing your ability to analyze your results - figure out what they mean and what you think you should do about them!)
Are you struggling with RC and CR due to reading speed and comprehension of text overall? If so, commit to reading GMAT-level material every day; this will help in b-school too. Here are some sources:
http://magazine.uchicago.edu/http://harvardmagazine.com/http://sciam.com/Scientific American can get a bit too casual for the GMAT, but if you don't like science topics, then it's worth including.
Or if there are other ways in which you're struggling with RC and CR, please describe that to us.