Am I close to harvest window?

2 weeks is enough time that some or most of these may be ready anyway. This stuff isn't uniform. I've seen plants 'speed up' at the end that seemd to be slow-flowering varieties... just have to look at that time and you'll know if it's a bit early or not. Speculating now won't help either way if it is a necessary thing. They might shrink up a bit more than normal. May not be the best for bedtime smoke, if you use it to help you get to sleep etc... but you probably won't notice much of a difference if its a few days early.

Check the trichomes. If they are mostly milky and some amber, you can harvest. You could also harvest before, which would end in a less potent turn, or harvest after this point, which will result in your weed making you more sleepy and the high not being "crystaqlclear" so to say

I guess they could take still 2-3 weeks until they are really ready, the trichomes don't show amber color yet and many Pistils are still white and not orange/brown 🙌