Yes, just tip surgery is possible. It would probably be cheaper. Rhinoplasty can address droopy tip, bulbous tip, dorsal hump, hanging columella, and wide nostrils.
You can have a limited procedure to revise just your tip. It will cost less than a full rhinoplasty. If you don't want to go back to your original surgeon consult with a specialist in revision work.
A revision rhinoplasty takes longer, is more complicated and more expensive than a primary rhinoplasty. It's very important to select a surgeon and has extensive experience. The bulbous tip can be reduced, but it's very important that the new tip balances with all the components of the nose, and the entire new nose balances with patient's facial features. A full Revision rhinoplasty is usually required to do so. For many examples of rhinoplasty before-and-afters, please see the link and the video below
Patients interested in lifting and refining the tip of their nose after a rhinoplasty usually require a revision surgery.Revision rhinoplasty is much more complex than a first rhinoplasty, especially if the goal is to fix one single feature of the nose. This is because revision surgery runs the risk of changing the features that you like and do not want to change.I would recommend first speaking with your original surgeon and then with a revision rhinoplasty specialist. This should not be a rushed decision. Computer imaging may help you and the surgeon get on the same page about your goals. Safety comes first.