I used the UWorld as well. I felt it prepared me the best for the nclex. I would average about 25-50 questions every other day. I felt it was important to take days off to give your brain a break. I averaged between 50’s-60’s, but I read the rationales and really concentrated on missed questions. I took the nclex about a week ago and passed it. I felt Uwold was pretty much similar to nclex and most of my classmates used UWorld as well and passed. I think do your questions and use a common sense and you should be fine. Good luck.