looking for some advice - sh.itjust.works

I’m wanting to flip to flower in the next week. First grow ever so I focused on not killing anything vs. taking my time training them well. Is it too late to top these beauties to: A: manage my height before flipping to 12/12 B: improve my canopy and therefore yield C: mess around with and perfect some cloning techniques. Any advice is much appreciated!

Brand new! Finally got my clones. Will post an update once they're transplanted into my hydro set up. - sh.itjust.works