Hi! I'm new here as well 🙂 Most of my Phals are warm-growing summer bloomers, however I have a couple of the standard noID Phals (a few big and old ones that I am babysitting for other people as well!) that I manage to give the required cold period by putting them right by a cold windowsill in the fall. I'm in Quebec so it gets pretty cold here, so I'm not sure if that's an option for you! Otherwise, is it possible for you to place the plants outside during the day (in the shade) when the weather is cooler? You only need the temps to drop to about 17C/62F during the day (ideally a couple degrees colder at night, but that can be trickier if your temps drop drastically) for a few weeks in order to induce spiking. So maybe this way you can initiate the spikes before you start heating the house for the winter 🙂

So I guess that might not have been the most helpful tip if your temperatures aren't cooperative... but I do hope that you get your orchids to rebloom, and share the pics with us here! Cheers 😊