Start over.
It has been my experience that once you discover a colony of spider mites in your indoor grow its already too late.
With this particular infestation it is extremely difficult and in my experience impossible to salvage your buds. The particular issue with spider mites is they are spiders and will cover your plants particularly the undersides with webbing you will never be able to remove.
There are various things you can try like pesticides which will poison your plants and never get out of your buds, making your product taste horrible and will be toxic.
The webs and mites even if killed will crackle and taste very badly when smoked. The THC production will also be unacceptable.
If it is early enough and the plants have a long way to budding you may be able to invert the plant and dip in a pesticide and soap solution, something like Pyrethrins (from chrysanthemum plants), Neem oil, Peppermint oil. However this quite likely will not eliminate the problem.

The most absolute way to keep from having to play whack-o-mole with the problem is to kill off the crop, deep clean everything, the room, tools, containers, everything.
If the problem seems isolated you can try to very carefully remove the infected plant / plants by putting a bag over the plant/s and bring it outside. Once outside nature may correct the problem but don't count on it.

The best thing to do is use precautions and safe practices. Never go into your grow room after having been outside. If it is winter with cold and snow the risk is very low but summer time all it takes is one mite on your clothes, skin or hair to contaminate your grow room.
Wear clean clothes and shower before tending to your crop. If you have outdoor pets under no circumstance allow them in your grow.

If you are careful you should never have the gut wrenching choice of killing off your crop.