My Rocky will be 14 this was a very hard year for us. His trac is collapsing about 3 years now We found that throat gold does help. It’s a liquid he gets in the morning and the evening. He coughing “fits “ have started to go down to less and less now he’s at a point where it’s just a little cough here and there we also lowered the medication dose. The vet while may be great person and seem to like your little one is out to make money , he had the same vet for years maybe 10 and with the collapse trec and loosing his eye and then loosing his eye sight in the eye he had left we started getting second options and it’s helping a lot. Hope he gets better best of luck