Getting a female to push out xx pollen sacks AFTER harvest? Possible maybe?

So one thing about autos is they're strictly phenotype dependent as for what you get with breeder's stability thrown in there.
And I've seen quite a few posters talk about reversing a girl to get sacks for pollen but it's usually early on.
So I got the idea of possibly spraying a girl down AFTER harvest also keeping her alive to see if she'll push off some sacks then. Leave some small budsites like you would a reveg or something?
The reasoning is getting pollen from lets say that one that stood out from the other girls instead of just a random one. Cause you can't just clone them and keep the genetics around you know.
Then it would just boil down to storing it to use later.
It's something that crossed my mind a few days ago and I figured I would get some input from the auto regulars.

i'm not an expert on autos, but i have revegged a few plants. if you put them back in the veg cycle, they'll slowly revert to growing single finger leaves, then slowly back to 5+ fingers. if you leave them in the flower cycle, they'll try to grow more buds, but they'll all be little larfy bullshit buds. i've never seen one grow male flowers, but i've never tried