It might be helpful to ask your doctor about a possible UTI. They manifest quite weirdly in many older people.

I read a book The 36 Hour Day. It was very informative and eye opening. I try to always keep in mind that dementia is more than memory loss. The brain is no longer processing information as it should. They will do things that make NO sense! They will obsess about trivial things and be oblivious to BIG things. It’s easier for me to be patient when I remember that. This journey is difficult and scary for them too.

The most important thing you can do, or maybe the ,life partner you mentioned,
Is power of attorney. This needs to be the person who will be making all important decisions, money, health, everything. Also your father must be cognizant enough to sign the papers giving permisssion. Sounds like he is right on the verge of not being aware enough to do so. If this has already been done, good for you, if not, yesterday is not soon enough. Others will fill you in on other important things. Welcome , glad to have you. DD

My father is on Seroquel XR for the same symptoms!!! It has made the biggest difference!!

You may need both a POA for medical as well as a durable POA for legal & financial matters. The elder law attorneys will probably share this with you, but just in case, keep both types in mind.