Say yes first
Confirm the skip is fine before explaining any rules.
Name the cutoff
State the date after which a box cannot be skipped.
Confirm the next ship date
Tell them when the next box will go out.
Offer a pause
If they need longer, show how to pause for a few months.
Mention a swap
If the issue is the contents, offer to change what they receive.
Show how to self-serve
Link to the account page for future skips.