If they lose their leaves and start growing again, there is no need for a 2nd dormant season. Just keep them from freezing next spring.

I have some now bearing a late crop in a sunroom. These will be allowed a dormancy in a cool environment, 30s night 50s day, after they crop.

Others will be brought in as soon as they drop all their leaves outside. They will be forced to provide an early crop next spring/summer.

But be aware that they will need good light once they start growing again. My sunroom has 9-11 hrs very good light on 90+% of winter days.

I'm sure I'm posting too late now, but how cold is too cold when you're referring to someplace you could put your plant? With proper mulching it would do fine in a dark place around 25-35 degrees. You would probably want to mulch around it and cover it properly, but it should do fine. As fruitnut posted you don't want the roots or root to stalk to freeze.

Here is a link that might be useful: my sunroom garden