@tracidw
Thank you for your reply, it was a breath of relief to hear from several people on the forum, and to feel like I am not alone. I think getting into the dr. early is the clear message, the challenge will be how to do that as he thinks he has no memory problems. He does not remember what he forgets! Finding the right window will be important and I feel I need just a short time to get a bit more of a measure on this so we have a few more examples to base it on. But yes, it feels pressing to start trying to find the reasons for these changes. Thank you for the support and wise words, J.