Hi. Mum to ADHD teen and wife to ADHD husband here. I feel your pain. And whilst it's not fair, and still with you at the driving force, this is what I do, in identical situations to yours. eg. Last week I asked every day, "can you please clean the wall where you dropped your coffee and it's covered in splash marks" to DH and every day, I told DS, "your room needs cleaning" and this was ignored because they forget, and have "other things to do"....
Saturday morning, I got up, hauled DS up, and said "clean it, now" and shoved the hoover at him, "I will be back to check in 30 mins"
I then went to find DH, and handed him a bowl of warm water and a cloth, and said "clean the wall please"
Both got on with the task in hand as it was put in front of them, to complete immediately, with what they needed.
Hand DH the shelf and the hammer on Saturday morning.
I haven't put the shelf up because I have a hundred other things to do. This is ONE thing I've asked him to do. ONE.
Yep, and he'll forget. And you can't comprehend how you do everything and he can't remember this one fucking task, so it must be he doesn't care/respect you enough to do it, while you run round like a blue ass fly. No. Literally 5 seconds after you've nagged for the 30th time, he's forgotten.
I haven't organised a cleaner because we have shared finances and it needs to be something we both agree on.
Do it. Or it won't ever get done. Tell him what you've arranged. Tell him what his contribution is, and when it will be paid.
Why should I have to do absolutely fucking everything all the time?? Why do you think that's ok?
It's not. But this is life with ADHD. DH doesn't think I should do everything. But he genuinely can't organise a toddlers tea party. It took me a long time for the penny to drop (with acceptance) that he isn't doing this out of bone idle lack of caring. So you either arrange it yourself, or get mad every day that nothing you've asked gets done. You don't have to do the actual task, but you do need to plonk him in front of said task, when there is time to complete it, and literally say "this can be done right now".
Yes it's like being a school teacher. No, it's not ideal. He doesn't want to be this way.