I seemed to have somewhat of a panic situation too. In my practice. I took about 12 practice exams, scoring greater than 700 Q and ranged about 450-500 V every time; this is the score I was hoping for as well. I didn't once practice or even think about the analytical writing section, and when it came up during exam time, I wrote both of the essays in about 5 minutes and somehow managed to score a 5/6. The rest of it didn't go to well; as I felt simultaneously exhausted and extremely anxious.