If the status quo is maintained for a period of time (1-2 months), the change is not big (it will not hurt or loosen), and the teeth are in their satisfactory position and are not pushed (such as pushing the tongue). Then you can probably open it.
But the point is to tear it down. . . You should also wear a fixator (a transparent denture cover) for more than one year, and you should wear it very diligently (20/24 a day, only when eating), otherwise your teeth will actually come back unconsciously. If it's not that long. . . It may take two or three years.