Was I being controlling?

[AmIControlling]

DS is unwell today , meant to go to nursery but they wouldn't take him. DH said he would call into work and say he couldn't go in, I have an important meeting today for two hours this morning remotely but could watch DS for the rest of the day as my other work can be completed this evening or can be easily rearranged. So this is what I suggested. We live around a mile from his office.
To complicate things further we work in the same industry but I am more senior, his manager is my level. He is in a senior practioner role so he needs to be in the office for his appointments this afternoon (6). Apparently me suggesting this compromise is controlling, he just wants to take the whole day off because I'm so busy. My feeling is he just wants the day off work, he has a heavy caseload. We've not long gone back after annual leave. So am I being controlling?

YANBU OP. It's a difficult situation as you are responsible for the team he works in, but that's the way it is.

I see it as:

He wouldn't get the day off due to commitments
Taking a sick day is lying
It's not an emergency family day as you can cover most of the day (he just needs a few hours off in the morning)

So no, he can't have the full day off.

If he doesn't like the dynamics or you having input and knowing his work, then he gets another job. Sounds like he's sulking as he didn't get an impromptu day off

YANBU OP. Your manager offered to reschedule your appointments so that you could look after your DS but your partner fancied a day off.
As you are responsible for the team that he is also part of, that would have put you in a very awkward position if he'd ignored the offer of your rescheduled appointments and taken the day off anyway.
The fact that he sulked off to work and left you to take your poorly DS to work with you says a lot about him I think and I'd be questioning what that means.

I don’t see taking care of a sick DC as a “day off”. Call me stupid, but caring for a sick child is still work.