It kinda depend on where you live and how much you pruning it, you're probably pruning it way too much for it to get super stressed and not growing anymore. I had mine stunted because of repeatedly devastated by caterpillars, now it does still grow some leaves after a year or so not doing anything, but i'm not sure if it will still grow. I live in the tropic so it's their perfect growing condition, but i guess once it decided not to outgrow its neighbours it will just stop. I've seen a lot of farmer pruning these thing, but they tend to just prune out lower branch and give it a light prune at the top, and they leave a tons of leaves