[iowamark]

I have noted that after Dad is up for some time and active, his mind is sharper...

You should have him see a geriatrics expert. Sometimes a small AM dose of methylphenidate/Ritalin will help people focus. He might also try one of the meds aimed at slowing Alzheimers.

[KYGrandma]

I agree. First thing you need to do is see a geriatric expert.