I'm not sure I can really give you any good advice here. Is it possible to make up the points? Possibly. I got a 39 on my first NP1 test, and then scored a 47 on the second exam- boosted myself up 8 pts. So, it is doable, but fluid and electrolytes is a tough subject. I would read the Fluid and Electrolytes Made Easy book anyway, even though you feel like you are understanding it and I would definitely practice NCLEX questions. When I was in NP1 and 2, I used the Fundamentals Success, Test Success and Saunders to practice NCLEX questions and I think that helped. Are you allowed to review the exams there? If so, did you? Did you see places where you might have made silly mistakes? What were they? Were there a lot of knowledge issues? Did you over think?
I'm still learning how to take the tests efficiently and critically. I suppose it doesn't help that every 8 weeks I have a new instructor with a different testing style, lol. Reflect back at where you might have went wrong if you were able to review your exam. I saw some of my mistakes, started doing NCLEX questions (didn't do it for the first exam) and my scores went up.
Also, I did similar to Bumblebee with the objectives, but I typed each topic up into a word document first right before the lecture, then read the book and found the answers. Then I went to lecture and took notes. After that, I went home and filled in the stuff from the lecture into my document, then printed them out and used that to study from for my exams. With that method I got a B in NP1 and missed a B by 2 stinkin' points in NP2, lol. In GIGU however, I stopped using the objectives. I'm not sure if I would have done better if I had, because my teacher was just ridiculous, but I still haven't come close to failing. Now I'm in Peds and I'm still not using the objectives anymore, and I got an 84 on the first exam---there were no A's either (highest grade was a 90). So, I think you have to find what works for you, and then tweak it a little as you get to a new class with a new teacher because things will change. Maybe you can stop by the library and talk with the tutor there and get some suggestions on how they studied for that class. I think this is a good idea because you can talk to someone who goes to your campus and get more relevant info since things are a little different at each campus.