What’s wrong with your glasses? Sometimes, you can fix little problems by yourself, such as loose or tighten them. But if there are serious problems that may affect your eyesight, you should go to the optical store for help.
I think you’d better go to an optical store, and ask the eye doctor to maintain them for them. Although nose pads are not as important as lenses, you should also pay attention to fix them or replace a new one.