Too late in flower to be using neem. Your buds will taste like old jockey shorts.
Pyrethrin bomb is pretty much your only chemical solution at this point.
HAnd pick worms.
Also you can vacuum your buds... I'm not kidding. Test first to make sure your vac is not so strong that it damages the plants, but it's one way to reduce the # of mites present.

Also adding more breeze to your grow and reducing your temps will slow them down quite a bit. They hate the cold.

Or you could release ladybugs.

Or you could try no-pest strips.

But a few words of wisdom, if you have a bug problem, never initiate flower until you have dealt with it. Your options are limited by the presence of buds.

Take this grow as a learning experience and next time bomb the room twice before adding plants, and treat the plants with neem oil applied lightly and regularly (at less than suggested dosage) up to week 4 of flower.