Having your body flushed off nutrients also while in 'fight or flight' mode is never a good idea..
It's funny you mention this as now come to think of it if I ever had short sleep and need to function with my eyes somewhat open I will opt in to skip breakfast and maybe lunch so I get though the day with more energy rather having my body to work on digesting it :)
I used to always eat breakfast and since intermittent fasting last year I haven’t gone back to more than fruit and coffee. Yeah I’m not supporting coffee lol but it defo helps me fast one or two
But I only fast a few hours I don’t do 24 hours ones