Try this
- Explain which part of the routine you want to change and why it affects a shared plan.
- Ask about the practical impact, then choose a trial or a clear new arrangement. Do not silently edit a shared calendar first.
A worked example
“I’d like to move our walk earlier. Would that make your evening harder?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Keep the old routine until there is an actual agreement or a clearly stated personal change.