AUTO FEMZ!!! TRICROSS & MUCHACHA F5 INDR

This late in flower I would definitely not be spraying with anything, no matter how safe it claims to be!
Sticky traps hung everywhere would probably be my solution.........apart from getting on top of the problem weeks ago and not ending up in an infestation situation in the first place, that is!

Use traps, this type of insect is attracted to the color yellow; yellow strips of plastic covered in glue on both sides which, when placed strategically among your plants, will cause the winged adults to stick to it. Place them at a prudent distance from the plant, otherwise, a gust of wind or a fan could cause the leaves of your cannabis plant to stick to it. You can also spray it with biological insecticides: spraying Neem oil, pellitory, insecticidal soap, and Wormwood or Tansy infusions effectively eliminate whitefly. Apply them insistently at intervals of 5 or 6 days until the infestation disappears.

You can use some Dr. Zyme's Eliminator or some Spinosad - they're organic and will kill off the adults, eggs, larvae... everything .... and you can use them on the buds as well without harming your harvest and without having to rinse off. Neem oil is fairly ineffective and sticky traps are only going to get SOME of the adults...

Since you're going to have to spray tops and bottoms of all the leaves, and given the stage they're at, I'd do some defoliation to make the job easier...

Good luck!