Mines always checked every year
Simple solution is go to another optician after the one year and go back to the original for the 2nd year.
I noticed SS had put me on a two year recall after eyes tested last year. I went to them after being peed off with original optician as they could not after 3 attempts sort out my varifocal lenses. Original optician sent me a reminder the other day for my yearly check.
So no idea what's going on.
Bottom line is though if you feel your eyesight has changed you are entitled to have a free eye check.