@stanfordpuma and @hotelmotelpremierinn if you are going to pursue diagnosis be prepared to get fully involved.
DH and I have joked a lot that the process itself is a huge barrier. It took him 4 goes at referrals (lost letters, out of date letters, open books now closed etc) before I stepped in.
Also in the initial appointments DH struggled to articulate the impact or extent of his struggles because to him it was normal. I had concrete examples lined up to prompt him and was also able to emphasize the impact on his daily life.
There is much info out there about supporting kids with adhd that we have used a lot of it and adapted it for adult use.
Things that have been helpful:
A physical timer (with no other distracting functions) that alarms and he can take around with him.
Snack before and during tasks (glucose for brain function)
Breaking all tasks down into smaller parts and only focusing on 1-3 parts at a time.
Exercise/work at appropriate times (works first thing then exercises later in the day for a bump)
Meds- uses slow release followed by a short release in late afternoon.
Both of us accepting its a real thing so we can talk about if an action is appropriate right now (cleaning out the computer cupboard when our airport transfer is literally waiting outside) or if he might be straying into hyper focus territory (we've had shoes, watches, bikes, triathlons, home automation....)
Me taking full control of the family budget. He has access and oversight but I make the decisions and handle the planning. Also had to restrict access to some accounts so any impulse spending doesn't ruin us (bills, education, savings).
It's a journey for both of you so be patient with yourselves.