C7 Numbness and tingling but no pain.

I was diagnosed for cervical spondylosis post complaining tingling and numbness in my index and middle finger of my right hand and the MRI impression says: C4-5 Posterocentral disc protrusion, abutting thecal sac/cord had no cord signal changes. C5-6 and C6-7 Posterocentral and bilateral paracentral disc osteophyte complexes, abutting thecal sac and narrowing neural foramina bilaterally. It's been 7 months there is no pain and the tingling/ numbness/ any pain radiating from my arm on the index finger it's totally gone. However the numbness and tingling on my middle finger remains still. Not as much as it used to be. Also, my vitamin d3 was at 9.87 when the MRI was done. I was advised to wear collar belt and to take DRISE 1/week for 2 months. I checked my d3 levels after 3 months and found that to be @ 60 but now again to my surprise my d3 levels have gone down to 18. I am again advised to take DRISE for 2 months.  Do I need to look for neuro physio or a neuro surgeon. Pls advise.