Consider working with a seasoned tutor, someone who can spot the areas in which your verbal skills are weak and give you guidance on how to correct them. Just doing more of the same for another 60 days is unlikely to help. You need to work more efficiently and more effectively, not just more. If you cannot afford a tutor, try making an error log. Go over all the problems you have missed (and those you have just "guessed" on) and record why you missed them. This can point up a trend. You want to know what principles you have overlooked. It also helps to identify what was wrong with the answers you did pick so that you can see what traps you consistently fall into. Being conscious of your typical errors can help you avoid them. Go over the problems you have missed and try to explain first, why the correct answer is right and second, why the wrong answers are wrong. Recognizing errors is as, or more, important than finding correct answers. After all, there are four wrong answers to every question.

Thanks a million, will work on my weakness as suggested.

Regards,
Mani