Have you gotten appointments with any of the pain doctors in your new area? Some pain doctors say they do not prescribe opiates to reduce drug seekers from coming in
The link below may or may not be helpful. The information is several years behind. Even if a pain doctor prescribes opiates. There is no way of knowing if a particular doctor will prescribe you what you have been taking in the same dosage and quantity without becoming a patient and seeing the doctor regularly for at least several months. Some pain doctors prescribe opiates on the first visit and some do not. It is up to each doctor what they prescribe individual patients.
Be sure and get a copy of your medical records from your retiring pain doctor
https://projects.propublica.org/checkup/