P,

I totally support the schedule. If he doesn't make it, he doesn't get the visit. It's prudent to have it in writing, even if it's just on email.

Don't write him back now. Just write later with a visitation schedule proposal.

And I understand feeling bad. But knowing that you're setting up a schedule should help with that.

He doesn't have anything going on, does he? Why is he being so last-minute?