Most of my interview offers were for Nov and Dec, but I had a few for Jan. I took Dec off, so I scheduled as many PM&R interviews that required travel for Dec as possible, and scheduled all my prelim (I only applied to prelim programs within a 4hr drive) and the more local PM&R programs for Nov and Jan.
But if you are going to take time off, I'd recommend taking Dec off, Nov if possible, and Jan as the last choice. Also keep in mind you will probably get tired and somewhat burnt out at the end of the interview season, so try not to schedule top choices at the end. I scheduled only one PM&R interview in January, and all the others that month were prelim interviews. I was able to be excited about the PM&R interview since it had been a while since my last one, and I just tried my best not to fall asleep at the prelim interviews...
I called a few of my top choices to ask what their interview dates were, so that I could try my best to avoid scheduling other interviews on the same dates in case I got an invite. The program coordinators were all happy to tell me (thought the dates were often tentative), and it actually all worked out.
Try your best to be strategic with how you schedule your interviews, but keep in mind it won't always work out. I interviewed at UNC, VCU, and UVA, and was hoping to schedule them all together (I was driving from Chicago). In the end, I made three separate trips to the south. But I was able to group my CA interviews together so I only flew out once and saved some money.
The interview season is so much fun--you're traveling all over and meeting lots of new people (and PM&R applicants are usually rather likable!) Enjoy it as much as you can!