My SO is a full-time student and I'm 100% remote, with my desk in our bedroom and their desk in the living room. Our desks used to be in the same room, but only for a day. We'd both had separate meetings going on at the same time and realized it wasn't possible at all.

Usually in the morning we'll ask the other if they "have anything going on that day (i.e. have to be at school from noon to 2pm)" or "if they have any meetings". We like to keep each other in the loop.