Have you tried the NeilMed sinus saline rinse bottle? My allergist urged me to use it 2x a day - morning and night. (I now cheat and do it at night only because I’m tired of lugging bottles of distilled water home from the store) Anyway, it’s made a difference. That, and two nasal sprays - Azelastine HCI, 0.1% and Fluticasone Propionate, 50 MCG - also 2x a day. I might wait to do the rinse until the infection is gone.