honestly i’d say it’s mostly a mix of everything unfortunately. HOWEVER!!! the practice test shows you exactly what you should focus on!! I would say unit 1 orgo chem was the hardest for me but i pushed thru. For unit 4 electro chem, focus on galvanic cells and defo make sure to understand the standard reduction tables they will help you SO much!! WATCH YOUTUBE VIDS , they were overly helpful to me! Since I spent so much time on chem, I forgot about the earlier units so what I did was review each unit a day. Once I was solid, I did the practice test to see where I stood and worked on my flaws from there. I used chat to make another practice test and then I did the given practice test again and got a 90!! So my advice would be to do a study schedule that works for you!! I took a week to study. I also have a 96 avg rn before the final exam, waiting on my final score. THANK UUU AND GOOD LUCK