Hi Alix --
Glad to see you back and posting! Hope you are doing well.
I have given up trying to figure out exactly how the medical community in general thinks they treat patients fairly, and how they expect us not to go nuts when their info is often unclear or their treatment recommendations constantly changing....so I wish I had a good answer for you as to what may be going on with your appointment! Please report back and let us know what's going on.
I wouldn't worry yet about the appointment being moved up from November. For all you know the doctor could have come in and announced he's taking a month long holiday and wants to get all of his patients in before he leaves. No need to panic about something that, although concerning your medical appointment, could have absolutely nothing to do with your health and just be some administrative scheduling matter.
Remember, remain calm till then, although easier said than done, I know