Yup yup Jef is correct. You can lst the whole way til harvest if need be.. Stop when you have a nice even shape.. Wait and see, depending on grow space and light setups sometimes it's good to do lst right before buds start really bulking as if your light can't get much higher, you can find yourself with burnt plants. Also if you plant gets too tall and starts burning you can lst without snapping her it's always a great choice and has very little effect on healthy growing ladies. It's literally in the name Low Stress Training means very little to no effect on the plant if done with a bit of thought and some care/soft hands.