I don't have any advice unfortunately but I am also scheduled to take mine on the 13th of this month and I am a nervous wreck. I did find an awesome forum on here though by searching PAX-RN and it had some study tips and other websites to use for studying the content. Hope that helps and maybe somebody can give us some more advice!!
I took the pax back in may I scored an 83% my school only requires an 60% for entrance. It was pretty easy for me. I used the pax study guided that NLN created. It was a big help. You should use it if you haven't.