Hello and welcome to e health forum.
It is regretable that pain management therapies are not taken into account in some places.
In your case, it is not good to continue on opiod pain medications, as they can become addictive. Hence it is common for doctors to insist to reduce the drug dosage.
Management of the current pain can be tried with a combination of a lower dose of opiod medications (like Oxycontin) and a NSAID medication like Ibuprofen (advil) or a plain analgesic like Tylenol.
In addition, measures like weight loss, acupuncture, and physiotherapy will be very helpful to address your concerns of pain management.