Storing Yeast

[JR]

I have some WY1968 in the fridge that I recovered from the last batch I made with 1968.  I went through the process of rinsing it with water and whatnot.. But three months or so have
passed and I still haven’t used it.  Its not looking like I will use it for
at least another 3 months with me being on a bit of an American pale ale and
psudopilsner binge, but I would like to keep that yeast as I will get back to
English beers at some point.

Would it be sensible to make up a starter and put the 1968 in it and let it
ferment out then put the yeast back into storage.  Would that re-set the
clock to zero?  How often would I do this to maintain some life in the yeast? 
3 monthly? 6 monthly?  or would it make more sense to just leave the yeast
alone and see if it’s viable when the time comes that I want to use it. 
Not exactly high stakes since I can get new yeast for $18.

[MrC]

If it's going to be aaaaaaaaaaaaaaaaages before you brew then you're not brewing enough!