you either have to continually bend / shape over time or tie it down.. some things are temporary just to break apical dominance and get canopy leveled out, other things are long-term and should be tied/secured into place for long-haul
bending alone is okay, but even after it hardens up, over time it'll still try to "correct" its shape by slowly growing more vertically.
sometimes they can stall out after LST... sometimes it's just a matter of illusion. you were watching 1 cola (apical meristem) dominate before. Now, it is spread out among many axillary buds but still equal or greater than before, which will feel like it slowed down but it has not. -- Relative to 'normal' growth rate if no lst occurred. this growth rate is increasing exponentially, at least initially and assuming pot and other factors are all in a happy zone, before it hits a wall for one reason or another... including genetic/physical limitations.
So, train all day evryday... anything long-term tie it down or secure it any way that works well. Apical dominance is all about vertical height. The tallest portion of plant will always steal the most resources... if you want to spread growth out, break apical dominance... bend it down.. possibly temporary if it is an intended future vertically growing cola or long-term if part of base, since you want a base to remain horizontal for entirety of grow.