That numbness sounds like sciatica. Which I've had! My doctor told me about stretches I needed to do which eventually released the involved nerve. Here's a link to some stretches to try. https://www.healthline.com/health/back-pain/sciatic-stretches I agree that pain management seems premature here.
Numbness usually indicates a compression of a nerve.
Are you seeing your primary care physician or a board certified spine surgeon?
While the primary can order tests etc, given the numbness - your best option for proper diagnosis and treatment is to consult a spine surgeon.
They are uniquely qualified to look at the actual MRI images and see any nerve root impingement or compression, rather than just rely on the MRI report. Given it’s been ongoing and now you are experiencing different new symptoms, that would be my suggestion