How many weeks into flower?

I have an autoflower that got mixed in with my photo grow, and I'm unsure what week of flower it is in. curious because I'm trying to figure out where to be in my nutrient regiment and have never grown an auto before.
Trichome are mostly clear and a few not totally developed yet. I feel like she has another 2 or 3 weeks but not 100% sure maybe more....

 

I didn't have anything better to use for my scrog and am actually pretty impressed with how well the chicken wire worked out. It's a tight squeeze to get some branches through, but I liked how precise I could place them.