Hi gamberboy123,
Your plan seems pretty solid, but since timing is still an issue for you, my guess is you do have some granular content gaps that need to be addressed. So, in addition to practice ing OG questions, perhaps you should also do some topical practice to find and fix whatever remaining weak areas you have. Let's use quant as an example.
For example, let’s say you want to practice Number Properties. You can do so by answering 50 or more questions just from Number Properties: LCM, GCF, units digit patterns, divisibility, remainders, etc.
After each problem set, it's crucial to delve into the questions you answered incorrectly. For instance, if you stumbled on a remainder question, take a moment to reflect. Was it a careless error? Did you fail to apply the remainder formula correctly? Was there a concept in the question that eluded you? This analysis is key to your learning process.
By carefully analyzing your mistakes, you will be able to fix your weaknesses efficiently and, in turn, improve your GMAT quant skills. Number Properties is just one example; follow this process for all quant, verbal, and DI topics.
Here is also a helpful article:
How to Get Faster at GMAT Quant Questions Feel free to reach out with any questions.
Good luck!