OP, I recommend finding your local indoor climbing wall, that runs the
NICAS scheme,
We have a lot of success with dyspraxia people, three of our coaches have dyspraxia issues, my son has made huge progress with his coordination. He taken his personal successes into other areas of his life, and has made great progress in other areas (dyslexia challenges), as his confidence has grown, he is prepared to keep trying, knowing he will eventually succeed.
It really good for the brain training, as you can see where a hand or foot should go, you have to force yourself to make the move as your arms start to pump, and the brain registers the process,
It's really important to go at your own pace, but each time you go, you will see a slight progress, each and every time.
It's incredible self rewarding for an individual, as it they find themselves overcoming lots of personal hurdles.
we have just had a dyspraxia woman in her 40s, who has been trying to pass her driving test for many years in an automatic, she was advised to start climbing as last ditch chance, she started on the boulder wall, only able to make one move before falling off onto the crash mat, it took her a year, climbs like a pro now, and past her test, having been told she never would by several expert instructors, we now have been sent two more adults in the same predicament, she is coaching them.
It really brain trains the body coordination, do a big R and L on the hands, it helps to start, and always hire the climbing shoes(buy when she gets into it)
I suggest both you and your husband do enough lessons (two or three)to be qualified to belay, then you can pop along and do cheap odd hours practice, two or three short sessions a week and you will see rapid improvements.
One of the comments we hear a lot is that dyspraxia children's bike riding improves, reading and they suffer fewer injuries, we certainly find DS has improved, his spacial awareness is just fab now, and he gets up and down stairs without stumbling.
and if you do the NICAS you end up with a great qualification, that universities recognise as great personal development, plus you will be really fit (20 mins on the wall is equal to an hour in the gym), and the great outdoors is an endlessly brilliant hobby.