I'm so sorry you're going through this! I didn't pass my first time in Dec 2022. At that time, I had completed 60% of vet prep and didn't use anything else. This time, I did much better after completing 100% of vet prep (including lectures and powerpages), a couple of days of zuku, and group studying. For group studying, we would go over one species at a time and just ask someone to tell us everything they know about x disease for that species (clinical signs, treatment, etc.). Then go over any gaps they missed and move on to a new disease. I found that really helpful to hear how other people remembered details about diseases and make connections between species.