You don't need 3 years of MPE.
For those of you who already knew this, as you were. For the rest of you, learn through my mistake.
(This only really affects people like myself who had a couple subjects completed before starting the MPE.)
500 days is the sole parameter, with maximum 12 months backdated.
I only learned today that I was eligible for MPE sign off/full membership etc because I have already reached 500 days.
For example I could have signed off after about 13 months of my MPE tracker (over 6 months ago).
This may already be common knowledge but I was constantly told that 3 years was the minimum.
The 6 month check ins etc are just guides, just call CA once you have everything completed + 500 days and they will give you the final sign off form manually rather then waiting for it generate automatically after 2 years MPE (assuming backdate.)