Tiny vent

My metabolism is a joke. I've been fighting to keep 113lbs. But i forget to add olive oil to my food once and get into an accidental Small caloric deficit a single day and lose 1.8lbs overnight. Bruh! Back to skin and bones, i guess. (I count my calories and know what i need to do, so I don't need help, it just sucks that i gotta eat like a freaking savage every day with no room for mistakes).