I am no longer mad at my physician, but I'm a little mad at physicians overall. I've been seeing them for cognitive decline for awhile now, and not a single one suggested a medicine change. But I understand more about why they didn't. For one thing, almost all frontline Parkinson's drugs cause cognitive decline. I don't actually have Parkinson's, but I have a mitochondrial disease (unknown) that is reacting in a similar way to Parkinson's, so they have been treating me with those drugs, which has been largely successful.
Thanks to CoPilot, I think I've now charted a way forward that doesn't involve those drugs by switching to Pramipexole and a tranquilizer like Trazadone. Pramipexole has a small chance to cause cognitive decline, but usually that goes away when you stop taking it.
I am actually stunned at the number of commonly used drugs that can cause cognitive decline; for instance, Benadryl.