Honestly I’ve just learned to take my “burned out” state and enjoy it. I am fortunate enough with my job in that if I meet the deadlines noone cares how much I work at any given time, so when I don’t feel like working I just go for walks, or ride my bike around, or even drive to some remote place and have a picnic. Then I compensate by working hard on other days/weeks. This rhythm made my life so much happier, instead of trying to force myself to do an even amount of work all the time (including both forcing myself to stare at the screen when I really don’t want to, and forcing myself to go to bed when I want to stay late to work)