Alright, I am relieved that the pot sizes and location look fine. I will keep in mind that they will need more water to compensate for the,(likely) low humidity.
My Paph in moss is the easiest to gauge in terms of watering. The moss should not be allowed to get crispy dry. Once the moss is at that slightly damp phase, it’s time to water again. Good luck, they’re some of my favorites.
This has been a helpful thread! My paph in chunky bark (purchased that way) has been droopy this winter with the lack of humidity, while the one in a finer mixture has been fine. I'm going to repot the droopy one ASAP.