Reduce the width of the columella
The width of your columella can be modified by restructuring your medial crura. The cartilages can be reshaped and/or stitched together in order to modify the shape and width. It is a simple procedure that can be done with local anaesthesia.
Can I Get My Medial Crura Reduced?
With a modified nasal tip plasty you can narrow your columella by reducing the space between your medial crura. Although not visible in these pictures you probably have a hanging columella which can also be elevated.
Medial crus binding stitch
Yes! You can absolutely do that. It's called a medial crus binding suture. I often include it when doing formal rhinoplasty procedures but it could certainly be done in isolation, even under local anesthesia. It requires a small nick in the skin on either side of the columella to allow the suture to fall below the skin and heal correctly. When done right there is no scarring. Good luck!