Thanks, guys.
I did a lot of reading in the past 24 hours, and my plan tonight is to take all the plants out one by one and vacuum them first followed possibly with a spray solution of water/isopropyl alcohol. From everything I've read, at this point - 6 weeks into flower - neem oil will make the buds taste like crap, same with soap and everything else, and it's kinda too late in the game for me to be comfortable using the No-Pest Strips. So taking all of the options away due to the timing, vacuuming the little bastards off the fan leaves and them spraying them - but not the buds - with the alcohol mix is all I've got left to work with.
The most affected plants are my OG girls, and they already have a ton of trichs and are sticky. So I don't want to vacuum up my harvest - ! Will be VERY careful.
I'll have to do this over and over for the last couple of weeks at least once or twice a week. Fun, fun.