My spouse doesn't hear me

Hey folks, I've been a part of this sub for a while but this is my first time posting. Me (29nb) and my dx spouse (29m) have been together for about 5 years now and married for 1.5 years. I'm dx autistic as well so that sometimes contributes to problems in communication. In general we explain our feelings, share our perspectives and fight fair. However there is one problem that just seems to happen over and over, and it's filling me with resentment.

My husband does not seem to hear me, listen to me, or remember the things I say. When I speak to him, it can take 10, 15, 30 seconds for him to answer. Sometimes he never responds. When I do tell him something, he will forget about it within 1 minute and ask me again.

The most annoying repeat habits that come from this are: - asking me where something is that is in the same place as always - telling other people the wrong time/date/detail for plans even though it's written down, texted, and I told him 5 times - leaving me at work late when he's supposed to pick me up

How do I curb my resentment? He knows he's forgetful. He's taken medication but it didn't help much. At a certain point I just feel like a nag for reminding him of everything constantly; when I don't remind him, he forgets things and I seethe; I feel totally unimportant and ignored. I also know that he is a wonderful spouse in a million other ways, that he tries really hard, and that we both have aspects of our disabilities that we struggle with.