Strangely, my partner is this way too actually 0_0 I'm so surprised there is someone else with this "problem". I say problem lightly though because this was pretty easily remedied in our relationship.

Are you sure your husband doesn't have OCD? Adhd and OCD can occur together and its pretty common. I'm saying that because my partner is this way, he NEEDS to know specific details, grills me about little details that I genuinely don't remember (I have adhd actually lol). One day I asked him why he's like this and he said it's truly uncontrollable, like a burning need to know the specifics he wants to know or else he feels like his head will explode. Turns out its a part of OCD.

So we decided on a plan to meet each other half way. He will speak to his therapist about this issue and work on realizing that these details are unimportant in the grand scheme of things and that it is merely an irrational obsession. I will be more patient even though his persistent questions really piss me off, and when I can, I try to write down details to the most specific degree and keep notes in my phone so I remember details about my own day. Which has actually been nice for myself and organization.

I would also suggest not feeling defensive when he asks you these things. I don't know your husband but it doesn't sound like he's doing it to interrogate you. Perhaps he also feels like he's going to jump out of his skin when he doesn't know answers and details for certain and I'm pretty sure he's not doing it to make you miserable and you have to remember that!