Kiwi girl, I have a similar problem as far as the numbness and tingling in my toes. I do not lack energy etc., as I still go surfing as often as I can which is a lot since I am retired and there have been many swells this summer. But this problem has affected my stance and is more of a discomfort or irritation than pain per se. I have been on Lyrica and neuronton, seen a podiatrist for shoe inserts and PT. now I am trying the sublingual B12 meth.
My numbness has usually been on the outer toes of both feet and more apparent at nite than in morning. The inserts have helped as I use them in a surf booty as the podiatrist said I have plantar fasciitis but can not explain the numbness. Actually I have no back pain but have read sometimes there is a correlation with spinal problems and nerve damage, like sciatic nerve damage which maybe more of my situation than lacking B12.
I hope your situation is resolved and you get back to your old self.