yr give good advice........
did the same with one of mine 2 nights ago and she's been quite ever since.
It sounds like this one needs the lights to actually be left on . Sometimes if they can't see anything then every little noise sets them off, because of their natural insecurity at this age. Every dog/puppy has their own maturity levels. If leaving the lights on works, then you could slowly phase to a night light or something.
I would also agree with some of the other suggestions like :
-keeping the radio playing
-Femur bones to chew
-Stuffed toy to cuddle with
Good luck, let us know what works.