This is one of those “Why didn’t we do this when we had the house all torn up last fall?” situations.
Last fall during the big remodel, we rewired the entire kitchen and downstairs powder room and two upstairs bedrooms. For reasons which seemed good at the time (I hate to say how much that job cost!), we left out the front bedroom, and the miscellaneous wiring in the hall and entryway, all of which was ancient ungrounded knob-and-tube. This fall (after having been turned down by three insurance companies because we still had working knob-and-tube wiring) we brought back Scott the electrician, and asked him to replace all the remaining knob-and-tube.