2 week??

Depending on the strain , each one have a different harvest window. The og kush is listed as a 8 weeks strain so wait for 9 weeks as 8 weeks is with the perfect confitions & setup The amnesia is listed a 10 weeks so 11 weeks should be ok 12 perfect The bubba kush is listed as a 9 weeks so 10 weeks is ok. If you have a magnifier harvest depending on the trichomes ratio , if you have none then the method listed above is good

The plants in the two lower right pictures look like they may be done in a week or two. But the others look like three weeks or so away..I'm guessing those are the Amnesia. To be sure, you need a Jeweler's loupe or microscope to monitor and judge by the trichomes for ripeness.