Welcome to the group though I am so sorry that you had to find us. I don't have any experience with this type of cancer but hopefully others on the site will have some info for you, and many have experience with Palladia. Have you spoken to your vet about his lack of appetite? There are meds to help with nausea which could be the problem.
You mentioned that you have worked with several vets. If you have not yet met with an oncologist I would definitely recommend seeing one. They are the experts in the field and have the experience, training, and resources to take on cancer. You might also want to consult with a holistic vet to discuss diet and cancer fighting supplements.
Max is so lucky to have you watching over him. I am sending healing prayers and hoping that he is feeling much better very soon!
-Mia and Patrick
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