I am pretty sure it is the OTHER things that have you feeling burned out, because for me, IF it self leads to more energy. Not less.
I would basically much rather take break from CICO and exercise if I were you, than take break from IF. YDY, but break from IF sounds like recipe for weight gain.
I know for me personally I tend to jump head on into new diets and make a ton of changes because I’m enthusiastic to lose weight and feel good. If a diet is good, super strict is better, if starting to exercise is good, more is better! But so many changes at once can and always does (for me) lead to burn out that eventually leads to giving up. If you’re feeling that way, I think you’re right to back off a little and focus on just maintaining for a bit. The way you eat/exercise has to be sustainable for you long term to actually be a healthy lifestyle instead of a diet. I feel like that’s a super hard lesson for everyone to learn, so kudos to you for recognizing the signs and taking action before that point. I hope I keep this in mind when I get to that point too, easier said then done!