How does the hour before the test go?

I’ve got my test tomorrow. My instructor asked me what I wanna do the one hour before (we’re meeting in the test centre area so won’t be spending it driving from my house). I wanna say lane discipline on big roundabouts etc cuz that’s what I may struggle with but at the same time you can’t really learn anything new at this point, it’s just a driving warm up, and I feel like doing that might stress me out more. Shall I ask for a mini mock test? Has anyone done anything that helped them right before? Manoeuvres? Test-like environment? Also my issue is use of speed I either speed over 20 or don’t hit 30-40 when I need to/somehow miss signs. Maybe just a bit of driving taking that into consideration?