doesnt look like he has enough horizontal room for lst, look at that 1 pic. walls are close.
plants are smart, and if it feels like it cant handle the weight it will not produce as much(hypathetically, obviously it still can). but it needs some kind of support if u want to see the full potential of its production.
even with most strong A+ phenos who have been raised under strict growing conditions need support during flowering. in most cases it is a must.
"Needing" support is a good thing...that means u expect weight... u never wanna think that ur not gunna produce enough to bend a branch
. but neways, a basketball net, some chicken wire, or just some string to the ceiling, somthin tho, those ladies need support.
u dont need to do it right now or nething, if u want to use a small cage, then put it up as soon as u change the light cycle. if ur just going to tie the branches up with string, u dont need to do it until u feel it necessary.
just wait for those buds to start commin, and just start tiein em up. that stalk will thinken quite a bit once u hit that 12 12 too. let us know how it goes bro