in all honesty that shit looks like what happened to mine with one single caterpillar. made me think my nutes were off cuz i couldnt find his ass forever was only happening to the new growth. he kept going from plant to plant. so all the plant i had in my 4x6 eventually looked like this.
by the time i found him he was about 2 inches long and eating whole leaves. he would also only attack at night for some reason so it was really hard to find his ass. lmao. that looks exactly like the damage he caused when he was small and couldnt grub the veins of the leaves yet. once the leaves started having huge full pieces out of them he wasnt hard to find but it took about a months time for him to get that big.
not saying its your problem here but they are green as the plants and small so they can be really easy to miss even with close inspection. maybe about 1/4 inch long in the beginning at most and they will eat shit quick even as small guys.
that shit looks wicked tho hope you find out whats up.