Oh no you didn't! LOL.Pinching your trees makes them weak and although the Japanese have been practicing bonsai for centuries, they have no idea about proper horticultural practices! Instead you must fertilize the heck out of your trees and prune then like hedges!
I've done this. It works.Repot all tropical's in the dead of winter. Bare root, cut back hard and put in a dark room.
You need to get a newly acquired plant out of soil immediately for the plants health, even if keeping it in a can. Because somehow the plant is lush and green even though it's been growing in that horrible dirt for years.Newly acquired nursery stock that looks healthy and vigorous must be repoted immediately for the health of the tree.