Do you find a cure ?please update.
Keep the crushed garlic pod for five minutes in each nostril and sneez out fully. Do neti pot and sutra neti every day. you can watch out on youtube.
Keep the vibration belt with magnets on your cheeks for five minutes every day ,which is available in the market. Do breathing for 10 minutes /thrice a day. I am not a doctor. i am also a sinus patient, after trying out all the medicines finally i could get relief after following the above things. Try out and let me know how it feels.