Hi,
That's not the ideal situation - except if you're in Zone9 . Once they wake up, they need to grow. At least they'll try to, and that energy will be lost if you don't care properly on them.
So bring them to a sunny window, and fertilize them - treat them as growing fig trees.
If other trees are just greening, try to slow them down by putting them in a cooler area - perhaps even outside if the outside temps are mild. Just watch out for the next cold spell, and be prepared to move them back to the basement.
Good luck.