Swollen tip and columella 9 months after septorhynoplasty and tip reduction surgery. Will this improve? (photo)

Hello, thank you for question and photos you shared. As you mentioned with nine months post-op you are in your healing phase which can take up to 2 years since you have oily and thick skin. Edema and swelling, you will have untill your final result.After your final shape if you are dissatisfied, a revision rhinoplasty to improve your nose for better can be performed. By Closed and Atraumatic Technique you will not have a cut on your columella, tissue damage will be prevented.Best Regards,

You have to give yourself some more healing time.  Your nose and surrounding areas are going to be swollen for a while and you should be consulting the surgeon that performed the procedure. It can take up to a year for final results.
Sincerely,
Philip J. Miller, MD, FACS Double Board Certified Facial Plastic Surgeon

Of course, all I have to go on is these photos, but even right after surgery, it seems your tip was very low, making the nose look long. And now at nine months, it's really no shorter. In fact, it's rare for a nose to elevate after surgery -- usually a nose gets longer as the swelling decreases. 
If you consider a revision, I would see to bring the tip back a little closer to your face, and to elevate the tip -- elevate it more or elevate it less, depending on your tastes. The woman in the short video that I posted with this answer had the tip of her nose elevated substantially in a revision operation.
Remember that rhinoplasty is an exquisitely difficult operation to get right, and you should only have surgery if you are able to make yourself very confident in your surgeon's skills. The changes I described above require advanced techniques, requiring skill that most plastic surgeons don't possess with expertise. For most noses, it's much better to not have surgery than to have inexpertly-performed surgery. Read my essay on how to stay out of trouble while selecting a rhinoplasty surgeon. For those who have had previous surgery, it also discusses how to tell whether your first surgeon should be performing your revision.
Your nose is also a perfect example of why computer imaging is mandatory in rhinoplasty. You need to know exactly what the surgeon is planning to accomplish -- what features he thinks he can change, and by how much he thinks he can change them. I always email morphs to my online rhinoplasty consultations. When you see the surgeon's goals in the morphs, you'll know whether he has an eye for an attractive nose, and whether he shares your opinion of what constitutes an attractive nose. You'll also know whether the changes he proposes are large enough to be meaningful to you, and whether he understands your wishes enough to address all of your priorities. How would you ever get that figured out without the morphs?! 
But remember, you're not the surgeon for his skills with the computer. The doctor must then show you his before and after photos to prove that he can actually accomplish what he draws on the computer.