I am extremely sorry you’re dealing with this.

I know you’re not after any advice and I don’t want to get your hopes up in any way. But I do hear about brain damage due to hyponatremia & subsequent improper sodium infusions somewhat frequently as I’m part of a diabetes insipidus medical group & this is a potential reality everybody taking Desmopressin faces.

I have seen a decent amount of anecdotal reporting of people stabilizing/recovering their cognition to some meaningful degree after a few years from the injury.