Cutting back the branches and the roots at the same time can really slow the tree down. Ideally, the branches or trunk are reduced when there are lots of healthy roots so the tree can push lots of new growth.
At this point careful watering and lots of sun with some fertilizer will encourage new growth.
As for encouraging growth on some branches and not others, I don’t know of a good approach. What I do know is that wiring branches can slow them down.