I'm in exactly the same boat as you OBK!
Just finished the module 1 material, and have booked myself onto Feb brush-up. Yes, I agree looking back at it all is quite intimidating, but my plan is to revise revise revise, and do as many feedback papers as possible to highlight any gaps in my knowledge. Hopefully the two week brush-up should provide the final 'polish'.......hopefully.
Good luck.
Iain