I need advice about pollon

I want to breed autos, I have 8 seeds from fast buds they are autofems I'm gonna uses sts method to make on producing pollen, the issue is timing the others just right so there ready to be pollinated when the pollen drops, from what I've read I need to use sts solution just before flowering so I'm wonder how long dose it take to produce pollen as again from what I read the best time to pollinate them would be 2 weeks into flowering so that would give 2 weeks for her to produce pollen, should start the one I'm turning 1st then a week or later start the rest or is there enough time starting them all to together