Assume you'll have to know and do everything you had to know or do for the examiner on your PP check ride.
That is pretty much what my CFI has done on my first BFR.
I hadn't flown in six months due to work and medical issues, and by the time I found time and had the medical issues cleared up I was past 24 months since my check ride. I've got the ground portion out of the way and we did some air work but we couldn't finish it up, so I'll be finishing up (I hope) next Monday. I was very rusty on recovery from unusual attitudes under the hood. Also had problems with power-on stall recovery, which kinda sucks because I had started to get comfortable, if not good, at those.
My CFI jokingly says that "The beatings will continue until morale improves."
