Don't panic.. but DO get yourself some BT (Bacillus thuringiensis). You'll have to spray the entire plant (just before lights out) and whatever is chewing holes in your leaves will take one more bite and decide to go elsewhere for lunch - where they will then die. It is organic and can be sprayed up to the day of harvest without affecting either the buds or the taste of the harvest... It's always good to have this on hand along with some Spinosad or Dr. Zymes Eliminator - the latter two will kill adults/larvae/eggs of leaf suckers like aphids, spider mites, thrips, whiteflies.... but for this problem, you need BT..
Good luck!