You are right, there does seem to be more advice written for the partners without ADHD. I think that’s because they need educating on what it’s like to have ADHD in general.
This article has advice for both partners:
This article/book excerpt is written for the individual with ADHD:
And this one as well: https://www.additudemag.com/marriage-advice-adhd-adult-relationships/.
You are way ahead of the game with a partner who is diagnosed, accepting his diagnosis, and actively seeking help and improvement. Those are very positive aspects!
ADDitude Community Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism