Transformed migraines

I am an 83 year old male . Starting in my teens I had infrequent violent classic migraines with Auras , nausea,light and sound sensitivity , Over time they became more frequent and less severe until they have been chronic 24 hour headaches unaffected by medication or other variable. I was addicted to oxycontin which was helpful for my back pain but minimal help for my headaches , I detoxed from oxy but started again with tramadol. Again it helped my back but little help for my head . I use a personal function scale out of 10. I am typically a 6 or 7 which means I continue with my daily routines but aware of discomfort . A10 requires me lie down in bed. Usually at least 1x per week. I am never without a headache

My doctor says I most likely have MOD or rebound headaches. . I am de-toxing now and down from 300mg per day to 50. headaches Remain unchanged and other pain now excruciating. I can’t rule out MOH. but I am convinced I have ‘transformed migraines’ , apparently very difficult to cure and you must revert back to the periodic classic type before treatment I have tried various cognitive behaviour programs but as one major pointed out CB programs are highly successful except for the one case of patients who wake up with a headache and it remains all day. i.e. me.
Does anyone know about transformed migraines and any dr in Canada with a focus on TM