Dear hakandragon:
I read your last post and I understand your unwillingness to share your feelings with your mother at this point. In the original one you asked: “What have you done to cope and get through, and heal yourself from that terrible burnout?” Suggestions:
Do less, place fewer things on your to do list and be okay with doing less.
Be patient and gentle with yourself.
Take care of yourself by eating well, resting, relaxing (relaxing music, yoga, meditation, hot baths, exercise..)
There are support groups specific to adult children who are attending to sick parents, online and I suppose in person groups.
And of course, you can post here anytime, express your feelings and thoughts, anytime.
anita