Hi, Joyce. I'm sorry you are going through this! I haven't helped a parent through this, but I did provide backup support for two other close relatives.
Here is a link to find caregiver support groups close to you.
http://www.alz.org/care/alzheimers-dementia-support-groups.asp
If you are the primary caregiver, are there others around who can give you some relief? Church, family, friends? Someone to watch your parents for a few hours here or there, preferably on a regular basis, so you get some down time?
And I always found this helpful, because in the course of conversations with my relatives who had dementia, I made a lot of these mistakes all the time. Knowing I didn't have to be 100% honest actually reduced the stress levels for both of us.
https://www.caregiver.org/ten-real-life-strategies-dementia-caregiving
Those are just the big issues that "I" dealt with, but I know that everyone has unique circumstances.
Also, local government offices on aging, local health departments, and local assisted living/nursing homes may have community resources that can help. And their doctors should have some resource information as well.