Chances are good that your actual ability level is higher than a 500—it takes time and practice to be able to build up your skills to do well over a 3-hour period on a full test. For instance, most people mess up the timing on the first test. If you mess up the timing enough, your score is going to drop significantly. And the only way to really get better at the complete set of decisions you have to make in a full test is to practice everything on a test. (This is all exactly why we have you start taking practice tests right away. So for anyone reading this who is in the earlier stages of study...follow your syllabus and take practice tests when they're assigned!)
But here we are now—we can't go back in time to change that. It's
possible that you may be able to get yourself into the 650 range in a month, but most people would need more time. So one thing to explore is deadlines. Is that a first round deadline? You may need to be prepared to push back to second round. It used to be the case that submitting your application in the first round conferred some distinct advantages, but those advantages have eroded over time. For most schools now, there's not much of a difference between submitting first round and second round.
You don't have to make this decision right now, though. Let's still go for the Oct 1st deadline—but just keep in the back of your mind that you may need to decide later to delay. You can reschedule an official exam for a $60 fee as long as you do so more than 7 days in advance of the test date. (Or you could decide to take the exam before Oct 1st no matter what—if you're not ready to get your goal score yet, you can use that first test as a "dry run" to get more comfortable with the testing center environment.)
So let's analyze your practice test to figure out what you need to do next.
First, read these two articles:
http://tinyurl.com/executivereasoninghttp://tinyurl.com/2ndlevelofgmatThink about how what you've been doing does and doesn't match up with that and how you may need to change your approach accordingly.
Then, use the below to analyze your most recent MPrep CATs (this should take you a minimum of 1 hour):
https://www.beatthegmat.com/mba/2018/05 ... ats-part-1Based on all of that, figure out your strengths and weaknesses as well as any ideas you have for what you think you should do. Then come back here and tell us; we'll tell you whether we agree and advise you further. (Note: do share an analysis with us, not just the raw data. Your analysis should include a discussion of your buckets—you'll understand what that means when you read the 4th part of the 4-part series linked above. Part of getting better is developing your ability to analyze your result—figure out what they mean and what you think you should do about them!)