First time growing autoflowers

can anyone tell me how much autoflowers grow in the flowering stage just wanna know if I should prepare for it or leave them go

Autoflowers have the "stretch" just like they all do when initially starting the flowering stage. Some phenos stretch more than others, I have been shocked by a few that just kept getting taller and taller. I would plan on them doubling in height, maybe even triple.

Damn okay then I’m glad I low stress trained one but getting another light so I can separate them I just am not experienced on growing indoors I know my way around a plant pretty well but all this inside stuff so much science behind it.. I know why Mother Nature took so long to perfect...but thank you just wasn’t sure with autoflowers and my green crack plants are already super tall they just started getting white pistols on the budsites...but thank you for preparing me
This is the runt of the group I LST her to get more out of her

That’s crazy tho to think theses things are gonna get that much bigger I thought they was done cause I haven’t much growth the past few days looks like the bud sites are setting up guess we will see