Certified GKH Gardening Expert
They don't usually go through a dormancy, though some can survive this far north, and will in that case.
Likely, yours isn't a hardy variety, though. Not unless you specifically ordered one because it was a hardy type.
In this case, you will need to treat it as a living houseplant with a high light requirement. If you do not have a South facing window that receives daylight almost all day, then you will need some extra lighting.
these will want 200 watts or more of horticultural lighting per plant. There are many options to choose from, as long as you stay away from cheap LED fixtures. LED's are wonderful, if you spend the money on a good panel, but sub-par if you want something cheap.
Ceramic Metal Halide fixtures are the most effective and efficient for cost, as long as you don't mind the added heat. They come in 315 watts, though, so you are limited on choice. They do light a 4x4 area, though, so anything that you can fit under there will have pretty close to sunlight quality lighting.
This article will help you to care for these in container: https://www.gardeningknowhow.com/ornamental/trees/brugmansia/growing-brugmansias-in-containers.htm