I agree with most of what already has been said regarding the timing of your GMAT. To improve almost 200 points, you likely will need more than just one month of prep.
Based on your verbal score of 17, I think your issues may be more about knowledge than about timing. If you had the appropriate verbal skills in SC, CR, and RC, then you would not have any issues finishing the verbal section.
To improve your GMAT verbal, you will want to use a resource that allows you to FIRST learn the concepts and strategies related to SC, CR, and RC, and then you will need to put in a lot of dedicated practice to test yourself on the areas you’ve reviewed. For example, let’s say you start by learning about Critical Reasoning. Your first goal is to fully master the individual CR topics: strengthening, weakening, resolve the paradox, etc. As you learn each CR problem type, do focused practice so you can track your knowledge in the topic. For instance, if you get a weakening question wrong, ask yourself why. Did you make a careless mistake? Did you not recognize the specific CR question type? Were you doing too much analysis in your head? Did you skip over a keyword in an answer choice? You must thoroughly analyze your mistakes and seek to turn weaknesses into strengths by focusing on the question types you dread seeing and the questions you take a long time to answer correctly. This process can be followed for all verbal topics.
If you are wondering which resources to use, check out the reviews here on GMAT Club.
You also may find my article helpful regarding
how to score a 700+ on the GMAT.
Please reach out with any further questions.