Regardless of if you're diagnosed or not, you can reflect around symptoms that might still fit, and how you function, and roadblocks you experience, and use tools that works for people with those same symptoms or issues even if you don't get a full diagnosis.
ADHD or not: you get overwhelmed with splitting attention while you're doing one task, and ADHD or not: you prefer to not stress and do side-quests before leaving.
I do wonder if the side-quests your wife is now on before a hike for example, is due to you having kids now and therefore must be prepared for a lot more stuff that kids tend to create -but aren't equipped to deal with- while hiking? Have you scaled up your preparations to include your kid according to their needs and not your own (like, you're an adult and can deal with the consequences of wet socks if you step in puddles, but kid might actually need an extra pair so they can manage the whole excursion)?
Keep figuring yourself out, and keep brainstorming ideas for how to make life more manageable for yourself. Good luck!
This may sound silly, but it happens to me more often than not that I forget the simplest solution when I wake up from pain: Did you take pain relief medication and wait 30-60 min before giving up on sleep?