Defoliation will reduce your plants capacity to produce energy which then leads to slower and smaller growth.
Your plant will grow its largest and fastest if all leaves are left in place to make the energy your plant needs to grow.
Remember - Maximum amount of healthy green leaves = maximum energy production = maximum growth and health.
This is basic plant biology 101.
Ensure adequate nutrition, plenty of room for root growth, ample sunlight and enough water, and your plant will grow just as nature intended.
Hope this helps,.....
Organoman.