Also, dehydration makes the Dementia much worse. If they get dehydrated, they will do strange things like put a knife and fork in every windowsill(BTDT). You have to make sure they are drinking water.
Also, do not allow them to go to the doctor alone if you can. Anything the Dr tells them will not resemble what they tell care givers. My aunt took a 30 day supply of pills in 15 days even though the bottle said 1 per day. She said “That ole doctor” told her two a day.
Dehydration makes everything much worse.
Ask anyone who has had a parent or friend in hospice. That's the first thing they do. Stop water, stop hydration. Speeds up the end very quickly.