Just a thought, but does your husband have a bedtime ‘to do’ list? I have written one for getting ready in the mornings. Without using the list I’ll take up to 1.5 hours to get ready for a day’s work because I keep getting side-tracked but having the list to hand I can keep on track and be ready in an hour.
My job involves hard manual labour, which imo is as effective as the ADHD medication I was on for 10 years as I was growing up, so if your husband has an office job it may be worth him trying to fit in a bit of exercise to release some of that energy in order to stay focussed – though I’m aware finding time would be difficult as a parent!
Hope this helps.