Help needed on strategy to ace gmat verbal

Make a grid. See the question types where you are making mistakes consistently. Mark the accuracy in each section. Identify the section that is your strength and the section which is your weakness. For example sentence correction may be your strength where the accuracy is 90% and RC may be the weakest where the accuracy may be only a 50%.Work more on your weak area. Also in each section categorise the question types according to your own personal order of difficulty. For instance in the CR section you may find the assumption question to be the most difficult and strengthen ones to be the easiest. Make a map for each section in a similar way and try to master the techniques for answering a particular type of question. If you are done with OG 12 move on to OG13. Also try the drills from Manhattan books. It is important to try all the questions of OG 12 and OG13 twice if you are targeting a 700+ on the GMAT.