Advice?? Not sure what to do next…

Backstory, my husband’s endocrinologist of 5 years never found the serious cancer growing. That endocrinologist retired, he got a new one, he took a biopsy, and found the cancer. My husband underwent a 7 hour surgery about 8 months ago to remove the cancer that had been building up for 10+ years. His new endocrine that found the cancer has since retired. We have tried seeing another one, but they have not gotten back with us after the tests he completed. I have called and they said they would send it over for review and get back with me. Still have not heard back and its been a month. We have tried to find new endocrinologist since then but none will take patients that have had thyroid cancer. Guess I'm looking for advice on what to do for my husband?? He is still tired all the time and cannot get back to feeling like himself. Its really hard because we had a newborn when he had surgery… like 3 weeks old. Our daughter is now 9 months and he is missing out on so much because he can't stay awake or even be present when he's around. This is not his normal self.