I can relate a lot. I wasn't the sole caretaker but I was one of the main caregivers for my mom for the longest time. She's also bipolar and would get manic episodes very often because we couldn't find the right medication. When she was bad she would get real angry, wouldn't sleep and we couldn't leave her alone home.

It was a lot of stress on my family especially me because it messed with my mental state. I never knew how the day would go. I cried often. I vented to friends even though I felt they didn't really understand. I tried to take care of myself and give myself some me time like going to a movie alone, getting a pedicure.

Things will be hard but please remember self care. Try to do something for yourself every day, even if its just treating yourself to some ice cream.