Eustachian tube dysfunction

I have been dealing with this for over 3 months.. I've had antibiotics and prednisone... I really dislike taking pharmaceuticals... I am not in pain.. I feel pressure in my right ear... Which is causing slight TMJ (no pain, just jaw tiredness).
I would love to know how to get rid of this eustachian tube discomfort...
I am taking Mucinex to help thin out the mucous... But it seems like it keep clogging back up the next day...

This all started after improperly using a nasal rinse back in early July 2025... I am sure I irritated my sinuses and there's likely a lot of inflammation causing this issue.

There is no eardrum perforation.. or infection anymore.

Thank you so much I look forward to your responses 🙂