How do you get over an MCAT Plateau?

Hey everyone!

I hope someone can give me some advice on how to get over an MCAT plateau. My last three practice tests have been 507-509 range (using Kaplan tests now), and I will be testing on Sept 28th, so I have time, but I just cannot seem to get over this hump. Has anyone been in a similar position and have some advice and tips on how to shift studying to break the plateau?

Thanks so much!