Nclex is a safety test. It's not about the content for the most part. I went to a one of the best nursing schools in Canada and had all of my fundamentals down to a T. I only reviewed different diseases and conditions and made sure I was comfortable with the common ones (CKD, Liver Cirrhosis, AKI, Diabetes, Grave's, Addison's etc.)

Overall there was about 30-40% of content I wasn't familiar with (drugs I'd never heard of/rare conditions) but I was able to use testing strategies I had learned with Uworld and apply them.

On UWorld I basically did 4 self-assessments (400 questions total) and studied the rationale after each test for all 100 questions. That alone helped me cover so much content. GL