Revision Rhinoplasty - Will Flatness / Indentation at Infratip at Columella Smooth Out? (photo)

That part of the columella (at the infratip lobule) is composed of the medial crura. Some people have bifidity of these cartilages (even without having had surgery) due their cartilage position and skin thickness which leads to an indentation.

I would give your nose time to heal. It is possible in the future to add an onlay graft to the region to fill in the indentation with a minor office procedure.

While it is difficult to judge from your photos, if there is indeed a flat area in the columella, this is likely in the area of the medial crura. My advice would be to give it more time to heal. If it is still present after 6-9 months, discuss a touch-up procedure with your surgeon if still concerns you.

The area that you are concerned about is most likley differences in position of your medial crura.  This also may be some swelling. You would need 6 months to a year for all the swelling to go down before considering a touch-up.