New orchid and need advice for my FDK After Dark Black Pearl

[Belsera]

Hi!

Been a while since I last posted but I figured this would be the best place to ask about my new orchid, a (I believe) Den Nobile I just got and if anyone had any advise regarding my FDK Black Pearl.

I got my new D. Nobile from the supermarket and found that it did not have a plastic draining pot in the ceramic one. I don't have any one hand right now so it'll have to wait until tomorrow until I can go buy one. Thankfully it doesn't look like it's packed in sphagnum but I'll find out for sure when I repot it. I was wondering if anyone could give me pointers on how to care for it. This is the first Den I've ever owned.

As for my FDK, I got it as a present in May 2017 from our local orchid show. It is still a baby and I've been doing my best with it but I'm not quite sure what to do right now since we are now in January and it doesn't seem to want to go in dormancy. The leaves are still nice and green with no real yellowing happening. It's not growing any bigger though, nor has there been any new leaves for quite a few months. Unfortunately it's pretty much impossible to have it experience cooler temperatures right now since my apartment is south facing (full wall of windows) and there is only one thermostat for the whole place. I have been placing it right next to the window where it is colder, but that doesn't seem to be doing anything.

Any advice?