The tip of my nose is hollow, I don't think I have enough cartilage to remove, will this be a problem during surgery? (Photos)

Thank you for your question.  From what I see in the pictures you do have somewhat large and full tip cartilages.  Decreasing the full appearance of you tip by removing some of that cartilage and reshaping what is left should get you the change that you are looking for.  Best of luck.

First of all, I doubt you nose is "hollow." Perhaps your cartilages are soft, and it doesn't feel as though there's a lot under the skin. However, the width of your tip, and the droopiness of your tip, and the strong forward projection of your nose away from your face, all indicate good strong cartilages in your tip.The bridge of your nose is wide, too, including the upper part, where it's made of bone. If your nose is shortened, and the tip narrowed, I think the bridge will just look massive as it sits adjacent to the newly-smaller lower third of your nose.If you are having large changes made to your tip, your surgeon needs to have permission to make sure the new tip fits with the rest of the nose. Besides, the work on the tip is by far the most complex part of a rhinoplasty like yours, and working on the rest of the nose would add not much to the overall complexity of the operation.Click on the "Learn more" link, just below my response, or go here:
FacialSurgery.com/RealSelf/RealSelf_sball01diva.html
I made a computer morph of your nose, and an animation of the morph, to show the changes that are possible for your nose in truly expert hands.I tried to show what it would look like to elevate the tip and narrow the tip and bring the tip back closer to your face.Those're my thoughts!

No matter how serious the flaw is the nose tip can be improved significantly. You have an over-projected, long nose with thick skin that has actually plenty of cartilage. Please make sure that you consult a board certified plastic surgeon who has enough experience with the difficult  nose surgery. You would benefit from a full rhinoplasty by someone who has done enough surgery on this type of nose.Good Luck