Try this
- List the real costs of each option: sleep, work, caregiving, or lost leisure. Exclude times either person cannot reasonably offer.
- If rotating helps, try a short period and set a review point. Equal frequency is optional; workable participation is the aim.
A worked example
“This week the early call is easier for me. Next week your late shift changes things, so let’s choose again then.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Do not keep a debt ledger for awkward hours. If the rotation repeatedly harms someone’s rest or responsibilities, choose asynchronous contact instead.