Prolonged swelling after zygoma reduction?

I had zygoma reduction surgery in Seoul 3 months ago with intraoral incision method, and degree of swelling is not different between 1 month post op & now. On some days, especially at evening, swelling gets worsen. I get really concern & do gentle face massage, apply warm towel on face according to the doctor's advice. But, no improvements, and swelling is up & down. I am really worried that chubby round face (due to swelling/ fluid accumulation) is permanent. Any effective interventions?? Thx

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