Are there any suggestions on how to bring it OUT of dormancy?
As the days get longer in the Spring and the sun becomes higher in the sky and more intense, Venus Flytraps come out of dormancy naturally, according to their own time schedule. Even Venus Flytraps grown together will not all begin their vigorous Spring growth at the same time; there may be a variation of up to 2-3 weeks, but you don't need to try hard to bring them out of dormancy. If you protect them from freezing and keep the nighttime temperatures from falling too low in Spring, they will probably emerge from dormancy a few weeks sooner than plants grown outside and exposed to the extremes of temperature variation.
Basically, Venus Flytraps let you know when they want to become dormant, and will emerge from their dormancy also according to their own schedule and with light and temperature cues, whether natural or artificial (under indoor lighting and temperature control).
Good luck and best wishes--