Hey fred427! It’s definitely not too late for LST, but you’ll want to be a bit more careful now. As long as that main stem is still flexible and hasn't become woody, you can still bend her down to help those lower branches get more light and catch up. Since she’s already quite tall, just go slow and maybe adjust the ties over a few days so you don't risk snapping the stem. It'll make a huge difference in your final canopy! Happy Growing Growmie🌱