Should this concern me?

Seeds: autoflower ak47
Medium: organic soil
Nutes: natures living super soil
Growth stage: beginning 4th week of flower
Treatment: Neem oil a few days ago

This has been going on for 6 weeks now pretty consistently. Its not a lot of leaves they eat.when i looked at all the sites it said this is caterpillars/worms. But i cant find them anywhere. Thoughts?

i have new plants about to go in there and id like to kills these things before then.

tia

Doesn’t look to bad yet... did you spray the soil lightly with neem oil also? And when I spray the leaves I like to have a little oil on my hand and wipe up on the back sides of the leaves to get both sides. Also crushes or knocks any pests off.