Try this
- Each person writes a short version independently before comparing it.
- Identify which differences matter for a practical reason and which can remain ordinary differences in recollection. Keep authorship visible if storing both accounts.
A worked example
“I remember the rain starting before lunch. You remember it afterward. We can keep both notes rather than choose a winner.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Do not use the keepsake exercise to settle a serious factual dispute. If accuracy matters for a decision, seek appropriate records separately and state what remains uncertain.