You could try knocking down your light hours like others have suggested.. see if that will trigger your AA into flowering.
But if it's already at 1m tall it will get massive! You could cut it back and tie down, or take clones for next time?
Quite a few options, you'll just have to have a think on what would work best for you.
iim happy to be reminded again why i trust lowlife, joint docs and mdanzig as auto breeders and nobody else.