I found a few holes that looked like a Caterpillar...

Hey D, so one thing the LED light pics are good at is kind of highlighting some of the inconsistencies on the leafs (a black light works even better) , what i'm seeing is the start of a calcium deficiency, you can tell from the little spots appearing in the middle of the leaf. these are probably what happened, the plant simply cannabalised itself so efficiently it cauterised itself because the leafs are so young. As you're in flower, this problem will get worse because the plant needs that much more micro to flower stretch, so you'll want to start adding cal mag asap, catch the problem early and remedy it just in time. Hope this helps ! 🚀