All the best guys!
If you've made it this far, your university has no interest in you falling at the last hurdle. Take them seriously and start early enough, and finals are straightforward, even if like me you remember nothing for your earlier clinical years.
Seriously, I intercalated after scraping through third year, so pretty much had to learn general medicine and surgery from scratch. And because I started revising an hour or two 3 months in advance, I got through without much fuss.