Oh wow but yes.
I hope you're doing everything to get the secretions runny & clear out the sinuses.
I used bisolvon 1 pinch daily (med) in a basil leaf.
Also home made saline nebuliser x2 daily.
Metacam was more important than I thought to reduce internal swelling.
Echinacea 1 small pinch daily in the basil leaf.
He preferred plantain forage - Has Abx in it.
Basil herb for a treat - said to be mucolytic.
Reducing dust is important Lea Anne put hay in a cardboard tube so Vin had to scrabble it out thinly rather than sticking his nose in a heap.
Minimising stress is also very important.
I pegged away at keeping everything runny for about 21/2 years. benjie's been off all treatment for over 6 months now & even completely free from eye discharge.
Hope this helps.
Please let us know how you get on.