I am so sorry and feel the same
listen to your BODY. i quit and there was so much guilt at first, but after noticing a huge change in my mental health getting better, my body feeling better, getting sleep, it was all worth it to me. our babies aren't going to remember how long they got to breast feed or thank us for it. you have to take care of yourself first before being able to adequately care for your baby!
It’s ok to be done. Breastfeeding is not easy. Also your mental health is just as important as the baby’s wellbeing. You shouldn’t be last on the list of priorities.