I am not much on making ciders, I am just getting in to wine making but it would seem to me that you could, like with beer, stop the fermentation where you wanted it, by adding campden or something similar, to kill the yeast and halt the fermentation.
You also may have better responses if you post this in the Cider Forum, or PM a mod and ask them to move it for you.
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I'm an [under] forty victim of fate, Arriving too late, arriving too late."