How long until harvest for this 7 week in autoflower

3-4 weeks. The times given by the breeders are only a rough guide and based on premium lighting, perfect environments and professional growers and are a long way from someone growing in a basement with a cheap low wattage blurple light.

If you look at my CBD hydro very similar took her talk structure very early and hadn't changed in the way of shape she just got bigger and only in the last week she is putting on bud mass. 3 weeks left at least then check with jewellers loop or mini micro scope and wait till 70% cloudy 30% amber cause I'd wait for as long as I could to harvest her as she has her bud sites now it's just a matter of getting them fat, about another 30- 40% bigger they should get. Good luck.

Judging from the pics I'd say 4-6 weeks could be more those buds need to gain more mass before even considering them to ready. Also checking the trichomes is the best way to know when the plant is ready to harvest, waiting until the trichomes are mostly cloudy and amber assures optimal THC levels.