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@TheUk420Show, said - three more weeks; I'd probably go longer than that. By the little info in your diary, judging by the previous weeks development I'd say you could go longer than 3 weeks for some well-developed dense colas and not just some soft/fluffy cotton candy. There will be more on the scales too, just like you don't want to harvest an apple when it is the size of a cherry and sour a.f when you can wait few more weeks to let it develop into a proper size & taste product.
I'd go for longer and keep an eye on the trichomes and harvest before too many has turned amber.