I've had this happen often: a mentee will reschedule 2-10 minutes before a session. Not only does this take up a limited slot, but it is also incredibly disruptive to a mentor's schedule. Please improve this experience; it's very poor. Time is valuable, and as someone doing this to give back to the community, I want to reduce my availability since time is not being valued. A reschedule within 24 hours should, at the very least, count as an automatic no-show.