Oh and hello pony, I thought we'd lost you!
2:2:3 is my own patented Way of Eating, and I have turned a few others on to it now
Basically the week consists of 2 fast days and 2 "golden" days which in my case is no carbs, lots of veg, basically small / light / healthy meals and a good amount of steps. I try to keep golden days under 1000 calories, others go for 1200, whatever works for you. Then I am allowed wine, carbs and treats on the weekend (which naturally starts on Friday and includes Sunday!).
It works for me because I need to have a "release valve" built in in order to deny myself treats for the majority of the time, and I find that the 2:2 at least neutralises, and usually offsets the 3. The routine helps me control cravings too: after doing it for a long time my brain sort of "knows" that it can't have wine, bread etc. on a Monday so doesn't really ask for it.
(I'm pretty lax, I don't stick to golden / fast days if I have social occasions, but I do at least always manage to fit in the fast days.)