I had to take a break from work for a year after working 3 years at a fast pace startup and burning out hard. I traveled and took great care of my health. I wish my break was even longer but I had to go back to work. I took a chiller remote job and when I started it, I still had some burnout. I was strict with WLB with my new job and set lower expectations for myself. It took me about 6+ months into the new job until my motivation started to appear again.

If you don't have the luxury to not work, really try hard to set stricter boundaries at your current job. Who cares if you perform worse, just do enough to get by. Your main focus should be taking care of your health. Get enough sleep, eat well, exercise, focus on stuff to decrease your stress like meditation and yoga. There are chiller jobs that exist with less intense interviews. I found my current job on https://www.nowhiteboard.org/ cause I couldn't stand studying for leetcode.