I see the question come up a lot if you can or should top them. I only grow autos so I can start new ones at anytime and flower all in one space. I top all of mine and lst most. If I can and the plant has the time I will top again. As long as you have good growth then do it. It’s the best was to increase yeild. Really necessary when growing indoors as they are normally smaller. First pic is wwa topped twice by 5 weeks.
This ones a bba. That wa topped 2 times and lst. Pics show fast recovery.
10 days ago.
Then lst. Recovered. More lst and topped again. Today makes 4 weeks old. .
Northern lights auto just topped yesterday.