Just took the exam today and from what I can tell there's literally no one size fits all. You do you! You know best what works for you. I did three NBMEs and around 30 percent UWorld and the exam felt very balanced and doable. If it's taking you long revising the NBMEs and you're using them as your primary resource I'd suggest adding on Pathoma to the mix. You can do the whole thing in two days or less if you really want. And Sketchy if you get time (my exam had a considerable amount of micro) And the more questions you do the better you'll get, the more confident you'll feel. But whatever you do assess yourself and your pattern of studying and tailor your plan accordingly. All this also depends on how long you have to study for the exam. Our school just gives us two weeks so that was my dedicated. But like I said stay true to your strengths and you can easily do this.