Sorry for the slow response, you will get through zuku/vet prep slowly because of needing to dissect the questions more as well as when you review the question, know why you missed it and sometimes, depending on the question, do a further analysis. (I finished < 30 % but I also didn’t hardcore do questions — I focused more on making study pages for myself to test myself on. So my outlines were pretty bare bones and a lot of quizzing.)
I’ve heard of statmed helping increase other people’s scores by 30 and one person claimed 150! (I was about 50-60) But at the end of the day, it’s a ****ty test and I honestly feel it’s just luck what questions you get.
I definitely do think a good nights sleep is important.