u should have done that when their were 5" and then do those top so you get all kinds of top it just would look all bushy their ready to bloom !!if ur indoor!!!
Yes, def. but a lot still depends on the strain. If it's mostly indica, they aren't going to get too big, but they should still yield a decent amount. What strain are you growing?
cut ur plants at the top @ a 45Degree angel in a week their will be 2 or 3 stems coming out that means ull have 2 or 3 tops not just one thats how u get more erb.. also lollypop then that gets u big colas