Step 1
Pick one period
Choose a clear start and end date. A month, a phase or one schedule change is easier to reconstruct accurately than an entire year.
Treatment history
How to rebuild a treatment history when your schedule has changed
Today's plan is usually easy to find. The harder question is what the plan looked like six weeks or three months ago — and what actually happened after it changed.
The useful test
If someone asked what changed three months ago, could you show them without searching five different places?
Start with the timeline, not the story
When records are spread across Notes, calendars, reminders and separate apps, it is tempting to fill the gaps from memory. That usually makes the timeline less reliable, not more.
A cleaner rebuild starts with the records you can verify, keeps the current plan separate from the historical record, and leaves uncertain parts visibly uncertain.
Five steps to rebuild the record
Step 2
Separate the plan from the record
Write down what the plan was at the start, then separately list the events you can verify actually happened. A later change should not overwrite the earlier record.
Step 3
Use sources, not memory, where possible
Check calendars, reminders, Notes, messages, existing trackers and appointment records. Mark anything approximate rather than silently turning it into a fact.
Step 4
Mark every change
For each change, record what changed, when it changed, what came before it and which record supports the change.
Step 5
Leave gaps visible
An honest blank is more useful than invented precision. Keep uncertain dates or missing events marked as uncertain until you can verify them.
What should the finished timeline answer?
- • What was the starting plan?
- • What actually happened?
- • What changed?
- • When did each change happen?
- • Which source supports each important event?
- • Which parts are still uncertain?
Free browser tool
Rebuild one period now
Add only what you can verify. Keep the plan, the actual record and later changes separate so the timeline stays honest.
Private by design: this builder runs in your browser. Checkpoint does not save or receive anything you type here. Refreshing the page clears the entries.
Timeline entry
Entry 1
0 filled entries
Record-keeping only. This tool does not recommend treatments, doses or schedule changes and should not be used to make a medical decision.
Free worksheet
Rebuild one period on a single page.
The Treatment History Rebuild Worksheet gives you a structured place to record the starting plan, verified events, changes, evidence and unresolved gaps.
Open the free worksheet
Why Checkpoint exists
Current plan ≠ past plan ≠ what actually happened.
Checkpoint is built to keep schedules and recorded events connected over time, so changing what is current does not erase the historical context you may need later.
The worksheet helps you rebuild a scattered record once. Checkpoint is designed to preserve that record as you go.
Keep the next timeline while it happens
Rebuilding a scattered record once can be useful. The more durable solution is to preserve the timeline as plans change, so the current schedule and the historical record remain distinct.
That is the problem Checkpoint is designed around: keeping schedules, recorded events, history and progress context together without rewriting what came before.
Try the Checkpoint founding betaA note on medical decisions
This guide is for organising records. It does not diagnose, prescribe, recommend treatment or tell you what dose to take. If you need to confirm clinical information or make a treatment decision, use an appropriate qualified professional.