I truly understand that things happen in life. We get sick, we have challenges, we sometimes need to reschedule meetings. It happens to me, too.
I can usually accommodate a few reschedules without a problem. However, I had a total of 14 student meetings cancelled or rescheduled in January alone. As you can imagine, that is a huge challenge for me, even with the ability to hold our meetings virtually. When I have so many family meetings to reschedule, that means I am working evenings and weekends to catch up on my other tasks and responsibilities.
Please don't get me wrong, I don't expect anyone to keep a scheduled meeting when faced with events that make it unfeasible to do so, and I don't want anyone to feel bad for rescheduling for a valid reason.