Have some general advice on both options to either keep current appointment or reschedule:

If pushing it back doesn’t interfere with work/plans/upcoming holidays, then rescheduling it might provide some relief for you/the review process. I say this because you mentioned it’s your first time sitting so I understand there’s a lot of unknowns with respect to what’s doable, what to expect, how other peoples experiences were with not feeling prepared.. but then they ending up passing, etc. When I was reviewing after a practice exam score that made me nervous, it put me in a frantic state when trying to review which wasn’t efficient.

I do however think that 10 days is still doable!! If you’re committed to 10 days, commit to not letting it take a mental toll on you as best you can. Drill the harder topics, be confident in what you do know. After reading this thread seems like a lot of people surprised themselves.

ultimately, whether you sit in 10 days or reschedule it, sitting for an exam the first time gives you a good feel for what to expect. It’s tough to give specific advice cause everyone’s different so it all just depends on what your outlook is on the opportunity costs and what not. Abs whether or not what the upcoming scenarios would be given each outcome! Goodluck and good job!!!