Try this
- Name the current time and the practical conflict that now affects it.
- Offer realistic alternatives or suggest asynchronous contact. Confirm when the old recurring appointment should stop.
A worked example
“The Tuesday call now clashes with my commute. Could we stop that calendar repeat and choose Sunday afternoon instead?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Check that both calendars reflect the agreed change. An edited personal calendar alone does not tell the other person the old plan has ended.