Biannual review??? Is there some new requirement to do twice a year reviews instead of the once every other year biennial review?
That was probably the reason they dropped "biennial" from the reg. Heck people go to the "liberry" for books, "ax" questions and don't know the difference between "loose" and "lose." How can you expect them to understand "biannual" vs. "biennial"?
Nineties - that wasn't a slam on you. It's much too common to be a slam on anything but the educational system.
For a more serious answer, those who said this is something between you and your CFI are correct. A lot depends on where you were when you stopped flying. I did one of these for a guy who had a 15-year layoff. But in his case, he had a commercial certificate with single and multi ratings and had been a CFI, so his experience and skill level was relatively high when he stopped. For him the flying part was almost like the proverbial "riding a bicycle" and he was ready to go after just a few flights.
The program we came up with together was:
Ground - he took a ground school quiz to gauge where his knowledge was still strong and were it was weak and studied on his own to make up the difference. That, and sole later oral quizzing, became his "ground."
Flight - The initial plan was that there would not be just one flight. The first flight was pretty basic. Go up do some stuff and try to get a couple of landings in. Based on that we had a plan to bring him back up to his certificate/rating skill level. After a long layoff like that, I also insist on at least one cross country flight - at least long enough to get a different terrain view and deal with a different airspace, and some landings with at least a 10-kt crosswind component.
In our case, we probably flew more than we needed to. We seemed to have a drought on crosswinds that year. But in his case, the timing of the signoff was less about me being comfortable with him than he being comfortable with himself.
But the point is that once you get past some basics - that you should have the knowledge and skill level of your certificate, what you need to get there after a long layoff is very individual.