Some perhaps obvious but potentially easy things to forget...
Hydrate/eat really well the week of your exam...
Bring water/small snacks (you should be able to access them on a break)
Drive to or make sure familiar w/ location of site day or more before the exam & get there early enough so you can relax before it.
READ the last sentence of the question FIRST...Then with that in mind read the question (I found myself getting Q's wrong in UWorld just from not following this).
UWorld was incredibly helpful in preparation for the exam, albeit extremely frustrating as none of us are used to scoring 50-70% and being happy with it...a big thing for me was to realize UWorld scores are less important than they seem on the surface, and just finish the Qbank and make sure I read the rationales (especially those I did not understand, the whole active learning thing took me a while). For example, Q's that have a peer percentage of less than like 30% I tried to not get too bogged down on but if I missed a question that say 75% I made sure to really check out what was going on with my thinking or go back and watch a lesson on/review notes.
An additional source that helped me exponentially was NCLEX High Yield, he does free sessions every Weds via zoom, also has podcasts free, or you can sign up for his course (a little pricey BUT absolutely worth it IMO)...now you sound confident and may not need a short course, continue to be confident in your knowledge!