Will columelloplasty alone rectify my hanging columella? (photo)

In my opinion, you most certainly require a tip rhinoplasty.

A columellaplasty may make things better but also may distort your nostril shape and position.

The "curative" procedure is a tip-plasty because the position of your tip cartilage lateral crura are pushing your columella down. Restoring normal tip anatomy will cure the hanging columella.

Let me know if you have any additional questions?

You need revision columellaplasty tipplasty and caudal septal excision. It will be better under general anaesthesia.

More pictures and a full evaluation/consultation would be required to know for sure. Changes at only parts of the nose can be done and I recommend you work with a Board Certified Surgeon that does many revision rhinoplasties.