At first, I thought your method was wrong. From your description, you can be sure that you are a bony process. You should know that simple orthodontics is just a cover-up treatment and can't solve practical problems. Need orthodontics combined with orthognathic surgery ~ ~

The gums are still bursting, and the whole mouth is still protruding outward because your jaw is protruding, which has nothing to do with your teeth. If you want to shrink, you need orthognathic surgery to shrink your chin inward so that your mouth can shrink.

If you want to do it, go to the stomatological hospital to see a maxillofacial surgeon.