Hobbies for NonADHD spouse

Need advice My husband of 2 years has ADHD. I suspected this going into the marriage but wasn't aware of the implications. I helped him figure out he had ADHD.  We are able to talk about our struggles and he has really worked hard to make changes. (as have i) One of our biggest challenges is that I can't keep up with his whirlwind of a life!  I have 3 kids from a previous marriage and he is a wonderful step-dad. But he has a ton of other interests that don't include us and they change with the season. I know he needs these outlets to be fulfilled so I feel that i should find my own interests. There are a few hobbies that we share and frankly that's enough for me. But I still feel like I'm getting "left behind". If I do find my own hobbies, won't that drive us further apart because of less time we have together. Advice would be appreciated.