Worsened lip incompetency after chin augmentation, how soon can I remove/replace it?

I got a silicone chin implant (6mm) three weeks ago intrabucal via, prior to that I already had some lip incompetancy, I had to manually close my lips but I had no problem doing so, after placing the implant I have a really hard time closing my lips (my lower lip is lower than it was) so I want to remove the implant or replace it for a smaller one. How soon can I do that? I dont want to wait six months because I cant even chew with my mouth closed.