WooHoo!
I have noticed thrips damage on my Outdoor tent plants. Not alot of damage, but only a couple leaves per plant,every couple days. During the day, I scope the leaves, and seldom find 1 or 2, Squished! I think they are most active at night?
I sprayed the outer perimeter of the tent, inside the tent around the plant containers, and the floor with non-pot friendly insecticide to hopefully prevent any new travelers.
I spray the plants, top and bottom of the leaves, stems and the medium with neem. Trying to get rid of them before flowering.
So far I have prevented total infestation, but have not completely rid them... Yet!
Your plants are pretty full, so I don't know what you should do?
@InTheShed may have better guidance? He seems to know ALOT about most everything cannabis related!