How tall are those pots? If that middle plant is 11" tall dirt-to-tip, how tall is it with that pot? 2.5 feet total? If it's around there, you probably should flower within the next week or two. Which means you have enough time to top the plants (if you haven't already, it's hard to tell) and prune half the stems (to split them into two), and let the plant recover, before you flower.