What other symptoms, of unhealthy plant do you have? If any.
Best to order something off Amazon if cant get to a shop.
How many more weeks you said till finished?
These are immediate remedies.
Dr. Zymes, Crop control Trifecta, floramite. I know these are gauranteed to work against a few types of mites. And are 100% safe to use up to 1 hour before harvest, but dont do that lol.
Assume the mites are on EVERY plant too.