SOS: 30 days to GMAT, help needed for Verbal

I have been preparing for close to a month, and have my test scheduled for 23rd of December.
Gave my first GMATPrep mock last week, 660 Q50 V30.
Have subscribed to the GMATClub tests for my quants and have been maintaining 48-49.

I am more concerned about my Verbal section now, specially CR and RC.
Sentence Correction I have managed to get a hold of, using materials like MGMAT SC, videos by GMATNinja on youtube, and the OG Guide.Have an above 80% accuracy in this section. So, I think with sustained efforts, I can atleast stay at this level.

Critical reasoning: I am extremely poor at this I feel. And this is due to both timing and accuracy issues. I take more than 2mins for every question, and even after spending so much time, my accuracy is below 50%. Initially I used the MGMAT CR book, and even after trying to attempt its methodology, I have seen no improvements. So, I switched to CR Bible believing the MGMAT book isnt the best for me. It has been two days now, and I have covered just two types of question from the CR Bible book, and I am still not able to get a grasp on both my timing and accuracy.
I now have just a month left and am starting to panic. I know I have just enough time to improve on this, but I dont want to spend another day without any improvement.


Reading comprehension: I am reading enough everyday and will be continuing on this. Some tips here would be useful too.

Can experts here help me manage the remaining 30 days efficiently by suggesting some ways here? This forum has helped me a lot already and hope it could be the same here.

Target Score: 730, for which I will need to touch V38/39.
Quants I am hopeful of maintaining at 50. I understand 50 to 51 is too big a step, and I wont be disappointed at not achieving it.

Material used:
SC: MGAT SC, GMATNinja video sessions on youtube, OG
CR: CR Bible