People who keep posting “your husband has dementia” can’t possibly know this. It could well be, but equally, it could be something quite different, and until an assessment is done, by a professional, such an automatic diagnosis given by people on this forum cannot be taken as fact.
Certainly, the symptoms you describe HarlemShuffle are very concerning and your DH does need to be assessed ASAP. The poor driving is, obviously a huge concern, as you are obviously aware.
The best thing to do would be, I think, as suggested by so many other posters, to contact your DH’s surgery, either going in or by phone, listing everything to them that you have said here in your first post and try to arrange an assessment via the pretext of an MOT over 70’s health check or blood tests or similar (whatever they suggest, really).
It must be so hard for you, but I think you know instinctively what you need to do in order to get answers and next steps. 💐
Have you stopped buying papers?
Retiring and living frugally in money from downsizing after years of stress


