leave as many leaves as ya can. put it back on 24/0 (some might say 20/4...no matter) and get her back on the vegging nutes. you will see growth variations at 1st...like single leaves, then 3, then 5, etc etc and plan on waiting a month +/- before she reverts back to full veg.

i have tried the closet thing just before harvest (48 hours of total darkness) along with half of same strain finished 'normally'...i noticed no difference. but it won't hurt a thing if you want to experiment...

and yes...take cuttings after normal growth has resumed.

good luck!