When is it time to flush autoflowers?

My plants sprouted around June 5th, and I have three right now. The leaves on two of them are starting to change colors, and they're starting to look ready to me, but this is my first grow so idk. Since I'm coming to 9 weeks in, and these are advertised as 8-9 week strains, should be ready to flush soon?
One of the plants still looks like it needs to grow a little.
If pictures would help, let me know and I'll try to get a picture of the trichromes under my jewlers loupe. Thank you!

Actually, I took a picture under the loupe anyway. Looks like things are starting to get pretty amber! Still not sure if it's time to flush or not though lol

She's Done.