Say yes and confirm quickly
Acknowledge the request and confirm which reminders will stop.
Explain what still arrives
Mention required notices, such as confirmations or changes to an appointment.
Offer a lighter option
Suggest one reminder or a different channel instead of none.
Warn about missed visits
Say plainly that no reminders can mean more missed appointments and fees.
Update the record
Change the preference in your system so it holds next time.
Confirm in writing
Send a short note saying what changed and how to reverse it.