I am not prepared

So the past few days or weeks have been a rollercoaster of emotions. My mother is switching between being alert and her normal self (well as normal as we can be) to constantly talking about giving up and not wanting to eat or do anything. There are days that she will just stare into the distance or sit with her head down. She does not engage she does not do anything. The changes of emotions are causing whiplash. Walking into my house after work feels like my soul is being taken from my body. Yesterday she called me saying that she was being held hostage in her bed and no one is letting her out. She had been in and out of the bed room the whole day, once we got her out of the bed she wanted to go back. We were able to have her eat some food and then she went back to bed.

How do I keep her from wanting to give up? How do I tell her that she cant give up and that there are so many things that she needs to continue to do? How do I keep myself from becoming so overwhelmed and frustrated I feel like a bad daughter because I get so frustrated by her lack of drive. I know that sounds horrible and I sound like a brat.

I just wish I knew what to do. I have been trying to find her a neurologist and cannot get into one for weeks if not months. We have a meeting with a psychiatrist so hopefully we will be able to move forward with something. I just hope someone has any ideas.