Lol, yeah, the other thing I try to remind my staff is that the 1:1 is primarily for them, not me. So if they need the time back or have nothing to discuss, unless I have something important, I'm fine if we just cancel (this is especially common when someone takes days off around the weekend... there ain't much to say if there's only been two work days since the last 1:1!)

A 1:1 has a specific purpose. If it becomes a mindless ritual it loses its value.