This article may give you direction on use of medical marijuana for pain: https://www.hellomd.dev/health-wellness/micro-dosing-cannabis-stopped-my-chronic-pain
Using CBD only orally twice a day is a good start; then add CBD:THC 50:50 combos (tinctures or edibles) for breakthrough pain and to sleep soundly.
THe topicals rubbed into the painful areas can also be added to that regimen.
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