Thrips are worse that spider mites. Harder to kill, more destructive. And, if they're related to the thrips in MY part of the world, they will bathe and bask in neem oil, get a good tan, and keep on eating.
Now that you're in flower you cant go nuclear on the bastards. Good luck.
In future, spray with Avid every 60 days, and don't spray for 60 days before flower. Follow directions on the bottle, the stuff is great; but it can be dangerous.
~ Auggie ~