Thrips are nasty shitbirds. I haven't seen mu...

It always sucks getting pests during flower, but at least your Alien OG is otherwise looking nice and healthy! It can be tricky balancing removing the pests with not damaging the flavor of the buds. I have personally used Neem oil sprays and insecticidal soaps to pretty good effect. Even your trifecta combo could affect your end result if you get too much on the flowers, so you can always try giving your plant a shower. Use water to blast any pests, eggs etc. off of the canopy and upper flowers. When wet you can spray the lower levels of the plant and under the leaves and canopy, trying to avoid the buds if possible. Repeat that cycle to kill anything hatched/misses every 3-4 day for a few times and hopefully you can put a swift end to the thrips! Good luck with the grow, it can still be a great harvest!