I'd let them go dormant. There's not enough light in the sunroom unless you suppliment. It's not only the light intensity that's lacking but also the number of hours of daylight. Unless your temps are below freezing at night I'd probably leave them outside and only take them in if they were calling for a frost. I'd cut them back when it's time to take them in and root the cuttings. Your brugs should reach blooming size again with a regular feeding schedule and the cuttings that were taken should also bloom. You might also want to consider a larger pot.
Karyn

Thanks Karyn1.

I brought the plants outside again and will watch the temps at night.

I'm thinking I might let one go dormant and try to keep the other happy in the garden room. I will have other tropical plants there so I'll have to try to figure out what supplemental lighting I'll need to keep them happy.

I'm pretty new to gardening, so I still have lots of questions. For the one going dormant, do I need to keep it in a cooler place or just a dark place? My only choices are warm and dark (basement) or cold and dark (unheated garage the sometimes goes to freezing). Should I cut the leaves off in addition to part of the stems? Is there anything you need to know about cuttings (size, place on plant, etc)? Can I keep the cuttings in just water until the spring? Do they need any additional nourishment?

I'm also planning to move them into bigger pots (14"?) but will probably wait until spring. I can't do too large or I won't be able to move them.

Looks like Karyn got ya fixed up... Very Pretty blooms!!!
BTW Welcome!!!
Kylie