thank you for your answer, this was very informative, I got caught into the ME/CFS rabbit hole for a few days, sorry for the delay coming back to your comment. A lot of things make sense for my situation of feeling tired all the time, even with some breaks and regular off time I can easily go from well rested to feeling like crap.

I'm really grateful to have seen your comment and that you answered me, I will do some experiments and tests to asses my situation better and check if some of the solutions can help.