At the perfect time. Your at node 4 or 5. This is the time to do it right before the stretch. It will ensure both new nodes will be tops and both stretch good.
I just did lst, and hade literally 10 tops and got 7oz off my Mango smile and I did same to my sour stompers but didn't do lst as much. Got 10oz from those two.
Lst works if timed right. So does this. Although depending on the strain it may not respond well to it. But you wanna try it, and since you do this is the perfect time! It's old enough to pull itself though. It's before the stretch so all new tops that will be made will hit the stretch together!
Hope I helped.
Please pick me as the answer so j can try to win grower of the month contest 🙏 please and thank you 😃
Goodluck on your grow, she looks beautiful 😍