I read its not beneficial if I cut the leaves and defoliation also doesn't seem to be the best method. Any idea?
You did not add a picture, but what you probably have is such an S-shaped young tree.
Cutting leaves/defoliating it is not a good idea. You'd need to get branching/ramification.
However, your tree is not going to be ready for leaf size reduction for a very long time. You need to develop the tree first.