Thanks so much for all your contributions, particularly the reassurance that it does get easier. I think part of the reason for my anxiety is down to most of the exercises to date being "set pieces" (for want of a better phrase) and fairly straight forward to drill and get into my head. Now I'm having to pull several together in the circuit.
The dinner table technique sounds good (i haven't got flight sim software) and can't be more embarrassing than getting caught practicing RT while driving!
I apologise if anyone got the impression that my instructor had thrown me in the deep end - I don't believe he did, I certainly got let off RT for the day! Whilst I found the session intense and frustrating, I wasn't drowning - just left with a lot to chew over.
Oh and G-EMMA - good luck with the nav!
Ta,
Red.