How Long Does Nasal Mucosa Take to Heal?

Recently I had open rhino and septoplasty operations. Everything went well until a few weeks later when I started having severe nose bleeds and had to rush to the emergency room twice. Turns out I had a case of epistaxis. The last ENT told me my nasal mucosa had worn away or something, and that I'd need to keep it moisturised at all times with sinus rinses and topical ointments. How much longer does this need to be kept up? What is the best remedy?