Hi aditya2106k,
Do not be disheartened. It’s a good thing you have taken your GMAT. You now know your weakness is the verbal section and can now work to improve your accuracy in verbal. If you are willing to study dedicatedly for two months, you are sure to achieve your goal.
For critical reasoning section, I would highly encourage you to consider Powerscore critical reasoning bible. It is a great GMAT prep book and will clear your concepts really well. Powerscore CR bible with OG will surely improve your accuracy on the GMAT.
For additional practice you can use e-gmat Scholaranium which is included in your courses and is one of the best verbal practice tools in the market. You can easily track your progress in that you can identify your strengths and analyze and improve on your weak areas.
You can also try out the
MGMAT guides for SC and RC as they are phenomenal and cover the entire syllabus really well.
Further taking multiple mocks might help. Apart from the GMATPREP,
Manhattan GMAT tests and Veritas Prep Tests in my experience have good verbal and Quant section and will certainly help you point out and improve your weak areas.
Further another advantage of taking many mocks is to build up your stamina. Apart from the GMATPREP tests, taking practise tests of any major GMATPREP company ought to do that.
Lastly I would also encourage you to purchase the latest version of OG and the verbal review for some great additional practice. Here is a link that will help you with your decision.
Hope this helps. All the best.
Thank you Rohan for your detailed reply. I have completed OG13 again and gone through CR bible. Bought Manhattan 6 Full tests Yesterday.