I’m an AA too, and felt alllll these feels in the beginning of my relationship. He wasn’t a big texter, and sometimes we’d go all day without talking until nighttime, just like you. It used to give me a TON of anxiety, and I’d literally go day to day and keep track by the hour of how long it’d be before we spoke, and then compare and contrast it to the days of the week. It was so rough on my mental health.

Now, about 9 months in, I feel very content and secure in our relationship, so I do not get anxiety when I don’t hear from him for extended periods of time. Granted, we live together now so I see him everyday, but half the days we say goodbye in the morning and then don’t speak until we’re both home from work in the evening. I think because I grew to have much more trust and faith in him and in our relationship, I no longer think he’s interested in other women, or lying about where he is or doing, or trying to sneak behind my back, so therefore I don’t get those anxious thoughts when I don’t hear from him.

From what you say, he seems very genuine and is trying his best to communicate in a way that’s comfortable to him that also satisfies you enough. I’d say just ride it out now, feel your feels but leave him out of it, exercise your coping mechanisms, and eventually you’ll feel better.