Aibu not to remind DH?

[GuybrushThreepwoodMightyPirate]

I am 99% certain that he has forgotten that he booked a swimming trial/assessment for DD this evening. DD is 3.5, DH booked it because the lessons are on Saturdays so he would be able to go with her as a DH&DD activity. Tonight's thing is an initial visit to see which class she would go into.
I am tempted to let him face the consequences of his lack of organisation for once; I don't think DD is aware it's happening as he hasn't mentioned it to her and it was booked a month ago, so she wouldn't feel let down by him.

In general DH is a good guy but he tends to force me into the 'life admin' by avoiding things. He never shirks his role as father though.

So wibu to make this his problem or aibu and petty and should just remind him?

Reminded him with just enough time to get sorted but he spent so long fannying about and making excuses about why he'd forgotten/not organised himself that he missed it. He wasn't even considerate enough to call the pool and cancel without my prompting. I am pissed off with myself for not letting it bite him on the arse but livid with him.

What is the point? I feel like his mother. Deeply off putting.

I am going out as soon as children in bed.

I kind of agree that this is really unhealthy even though I feel your pain.

This is all a bit passive aggressive for my liking - and probably far too subtle to have an impact anyway.

I think you need to either just accept that you will have to remind him forever (and try to find other things he can do in return). Or have an almighty row with him about it and hope it makes some sort of difference. Or just put certain things (like DD swimming) entirely on his plate and stop thinking about them altogether - don't even diarise them, if he wants them in a diary HE has to do it.

Christ.
DS (age 18) has just come in and said, hangdog, that he's totally cocked up his own summer holiday booking with friends, by booking it across TWO events he's already committed to going to.

His excuse was that 'Things he's booked only come up on his phone the hour before', which doesn't really work for August.

He's going to be one of those men, isn't he? How do I reform him in the next 4 months of parenthood and save some poor girl/boy from his future incompetence?

Tell him exactly that, it's making you resentful having to act like his mother and unless he wants you to be pissed off at him every weekend he needs to sort out not only swimming, but also his life generally and start taking responsibility for his family life.