Many people say not to study for hours and hours at a time every day but your study techniques are your own. All through nursing school I could easily study 12 hours a day. I got good grades in school and on my tests. For the NCLEX, I was told to only study 3-4 hours a day. I was not comfortable with that and did my normal 12 hour days. I studied every single day until an hour before my test. I studied all day the day before the test and woke up at 5 am to study until 12 pm. My test was at 1 pm. Don't let people tell you how you should study. Study the same as you did during school (however, if you didn't study much in school and barely got through, then you need to really get on the ball.)
With the regard to a review class, be careful which one you choose. Hurst and NLNAC are good from what I hear. Most people get through by only using Saunders and there is a great app -- NCLEX Mastery which I highly recommend. Passing the NCLEX isn't about having strategies on how to answer the questions, but more so KNOWING the content of everything from school. Know who that priority patient is and who you go to first, knowing all the components of any SATA they throw at you.
Strategies learned do not always work for every question. Courses that are strategy based, tailor their questions to be able to use those strategies. NCLEX isn't about strategies, it's knowing the material. You took the test before, so perhaps you just we're not properly prepared and that is why you thought you were being tricked. Take lots of breaks during your test. Bring healthy snacks and hydrate. Work hard all the way though, and definitely do not take any time off. Keep doing 50-100 questions or more every day. Make good use of your 45 days. The best of luck to you!