I'mDumb

Okay, so I'm not exactly the most proactive person when it comes to studying...and rarely have I ever done it, but still got decent grades. Now, it's backfiring on me and I'm not doing so well in Nursing I. The first exam I received a 76%, today's exam I received a 68%. The first exam, I barely studied for and today's exam I studied quite a bit more, but I got a lower grade? I think I might be over-thinking the questions and confusing myself. Our program is set up in a way that we have to pass exams with a 78% average before they can even count the rest of the class grade. Based on my previous scores, I'd need at least an 85% on the next two exams, this includes the final, to pass the exam portion of the class. I feel like the more I study, the worse I do on the tests...or I'm just mixing information up in my head. Any study tips for me to get an 85%, at least? Your help is much appreciated!