amyp
Get Official Guide if you haven't done it yet. Make an error worksheet. Make a clear distinction between your weak and strong sides. Carefull analysis is a keyword. Rememeber, you have to build skills, which is not quite similar to just reading theory and practicing. You have to buid confidence, since stress and nerves decrease productivity dramatically. You know this no worse than I do. Monitor your progress, stick to this forum, here you will find tons of useful info.
Why I am telling you this?...Because my story is quite similar to yours. I scored 520 on PP test 2 weeks ago. My test preparation routine has always been pretty close to yours. Too much time spent with a low score got is not and indication of stupidity, that is rather an indication of flaws in preparation strategy. All those 750-760 scorers you will find on this forum are not a benchmark. They are just very, very smart, smarter than 99% of others here. So what? Does it mean that only those who spent a couple of weeks on preaparation and got 760 have a chance? Definitely not.