It sounds like you have a load of materials and that can be overwhelming in itself. I think you should concentrate on one or two study materials. For me, I just used Kaplan for all the strategies (how to prioritize, how to answer questions) and practice questions. Davis' Drug Guide for drugs. Again, to avoid being overwhelmed, when you see a drug you don't know, don't study its itty bits and pieces like what specific enzyme it acts with this and that, just know that what it does, what to do with it, what NOT to do with it, SE, things the patient should know or should expect from it. Think about it this way, the next time you see a question about a drug, study it. What did the question require you to know about the drug in order for you to get it right? I bet it didn't need you to know what the Y-site compatibility is or the dosages for children and adults and inbetween. So when you're studying that drug, you can skip all that. I bet it might have needed you to know what it's for, what the SE are, what to do when you see complications, etc - so that's what you study.
You have to take the rest of the trainers. If I remember correctly, the last few trainers contain all of the level of difficultly question that you will run into during the nclex. Remember how the nclex is graded? You have the passing line and if you answer a question correctly you will get a similar or harder question and if you answer it wrong you will get a similar or easier question? The first half of the trainers only contain the easier questions. Do all of the trainers to get a good feel of the rest of the nclex. Also, you will be able to study the rationales and strategies behind answering the harder questions.
I don't know how you viewed this test and whatnot, so again, this isn't about you. I am just telling you how I saw the test and how it helped me pass. Now, this isn't a test you take in school. it isn't a test about what you've learned. It's a test of your ability to use what you know. The "what you know" part is everything you've learned in nursing school. Nclex knows you went through nursing school. Remember that. So when studying, don't study as if you're going to take a classroom test about that subject, study as if you're going to be tested on what to do with/about that subject. Take MI. This isn't a test to see how much you know about an MI, it knows you know it. This test is to see how well you've trained for it. This isn't a test that is separating you from the next chapter in the lesson or the next semester of school, this test is separating you from a room with an actual MI that happened to an actual person. So when you're in that room, think about what you need to know to practice nursing safely.
To top it all off, I think you have too many study materials. Like the rest of the comments have said and agreed on, you can't study every single test material and question out there as if they're going to be on the test. The practice questions out there isn't there for you to remember and study what the question specifically asked about hypothyroidism, it's there to have you practice what you know and don't know about what to do with hypothyroidism. Say you have a math test. You are not going to get every math book and study material out there to learn that 1+1, 1+2, 1+3. You're going to learn what "+" is so you can solve all of those problems. So now you're ready for all the "+" questions and you only had to study one thing vs studying an infinite about of things. So that question about a what position do you put a patient in after a bronschoscopy. You're not going to remember bronchoscopy = semi-fowlers. You're not going to study bronchoscopy and what positions you need to put them in and you're also not going to remember that every time you see bronchoscopy you're going to pick "semi-fowlers". You know that it involves the throat and sticking something down that sensitive area. So it would make sense to put them in semi-fowlers vs supine. The book isn't going to tell you to not to put them supine or not to turn their head or not to put them knees to chest, trendelenburg or whatever. You're going to need to realize what you need to know in order to come to that conclusion.
That's how I viewed the test. I only had Kaplan's review course, their trainers and bank, drug guide and google to refresh myself on a topic. I personally think Kaplan taught me everything I needed to know. Again, everyone is different.