Is inner lip surgery required to correct inner lip vestibule shortening as a result of sliding genioplasty?

Had facial feminization surgery in September, which included chin feminization with lateral tapering, vertical shortening & sliding genio. Love the results, but healing caused reduced vestibule height on left side of lower lip. Asymmetry & tightness affect speaking, smiling & lip mobility. An irregularity in skin texture in shortened area appears as raised, firm dots & suggests scar tissue. Grateful for advice, as inquiries have been unsuccessful. Is inner lip surgery required?