Be careful with the amount of dark time you give them. If they get too much, they will start to flower; and then when they are rooted you will have some growth stunting when trying to get them back into a vegetative state. Try to make sure they are getting at least 15 or 16 hours of sun before you tuck them away. 18 is much better, if possible. Do you have indoor lights? If so, you may want to supplement; or even keep them completely indoors until they are strong and the conditions outside are good enough to keep them out. I think you are far from the point of no return, though; they should spring to life soon. Good luck!
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