One practice exam is not enough to give you a good sense of whether you're ready to take on this beast of an exam. By now you should've taken as many as possible, for your discipline (which is mine as well: Mechanical), there are 4 other exams I recommend you practice with:
NCEES practice exams: There are 2 out there, 2016 is the most recent but there is a 2010 version which has about 13 problems that are still relevant to our discipline. I suggest you search for it on line (all other problems are the same as in the 2016 version).
EngProGuides Practice Exam: Runs about $35 and you can get it from their website http://www.engproguides.com/. Justin Kauwale the owner, is very responsive and will answer all your questions promptly via email.
Scott Hart and Kevin Klein practice exam: Amazon purchase, this exam is harder than NCEES but some of the problems are definitely in line with what you can expect to see on the exam (about 60%).
6-Min Solutions for MDM: There's a total of 80 questions here with complete answers and you can also find this book on line if you haven't already.
Problem recognition is ESSENTIAL for the PE exam, and that only comes with practice. The more problems you do the faster you'll be able to identify what's being asked of you.
Good luck to you next week !