A treatment plan only works if the patient comes back.
Six visits are agreed, costed and started. Nothing about stopping halfway ever looks like a decision, which is exactly why nobody escalates it.
Agreed, and then not.
Every reschedule had a reasonable explanation. Together they are a plan ending, and no single appointment shows it.
Eleven weeks since the last contact. The plan is halfway through and inactive, and the practice will find out as a gap in next month's schedule.
The last cancelled visit may not be where the plan began to stall.
It stopped at visit three, when the estimate was revised upward and nobody talked it through. Visits four, five and six are the consequence, not the cause.
A reminder asking for a new date addresses none of that. Knowing which visit the hesitation started at does.

One stalled plan creates several different consequences.
A course of treatment stopped at the halfway point, which is often worse than not starting it.
Nobody decided this. It happened in the gaps between reschedules.Half a plan delivered, the rest sitting in the diary as an unbooked gap.
The revenue is not lost yet — it is unclaimed, and recoverable for a while.A patient who has quietly decided something, and has not been asked what.
A reminder asking for a date does not address it. Knowing it started at visit three does.The plans that stalled are still open.
Nobody closed them, which means nobody decided anything. They are sitting in the diary as gaps, and every one of them is a patient who stopped mid-treatment for a reason the practice could still address.
No account required. A UMI team member will follow up.