Anxious About Cambridge HisPol Interview

I'm supposed to be attending a HisPol interview at Cambridge next week. Of course I'm excited, but I'm also extremely anxious and nervous, not necessarily about not knowing the content, but more so being able to structure and articulate my answers in a fluent way. Has anyone here had any experience doing a HisPol interview at Cambridge, and could perhaps offer some advice? There doesn't seem to be many resources for the joint degree, and I've exhausted all the YouTube videos.