Just spoke to the vet. He said they checked his teeth 9 days ago and that it’s unlikely to be teeth or fungal infection.
but he started chewing weird 3 weeks ago and it can’t be a coincidence that he won’t eat now. I feel they don’t believe me
you are perfectly entitled to get a second opinion from a different vet if you don’t feel like they are listening to your concerns. If he isn’t eating then there is something going on that needs to be explored and addressed