BBC America used to always have some presence of Doctor Who, reruns mid afternoon or something like that they'd advertise. They did a fair amount of Classic broadcasts as well (The longest was a few weeks of "Breakfast with Baker.")
Now they show the series when there's new ones, have a marathon for Christmas and New Years, and sometimes show the new animated ones. Reruns are way early in the morning when they're on, and not advertised much. Heck even the animated ones aren't advertised much, I've been surprised by a couple when the DVR found them on its own as "New Doctor Who."
I'm surprised they haven't started airing the classic series regularly to drum up interest. They made a big deal when they did show them as one offs.
Thought that they would have made their deal with Hbo Max to highlight their series!