I'm about 3 weeks into flowering and one of the plants is definitely looking like it's more sativa than indica (clones came from a friend). It's the only one not really budding and it's starting to tower above the rest of them. I already topped it once a couple of weeks ago but it's still growing faster than ever. Should I just keep hacking off the top branches until it slows down, or is that too stressful during flowering?