It really sounds that your nerves in your foot are dying slowly but in excess at certain times to make the foot like it is completely dead. My feet are racked with neuropathy which at times feels like my feet are going dead on me.
I've started supplements, after checking them very carefully...a lot of trash out there just to steal your money, but the ones I am taking each day are to increase the health of my nerves, increase the blood flow in my legs and feet, and I purchased an electric rotating foot excising machine with a hand held speed control. I can either work the steps manually with my own strength or use the remote control......i do both. After a couple of sessions each day,
I physically rotate my feet and ankles for a min. of 5 minutes to build up the muscles in my legs and feet then, I use crutches to walk with to exercise my legs as well as a treadmill with long handles to hold unto. I feel the strength coming back into my feet, ankles, and legs and I believe this forced and determined exercising is helping me to keep my blood flowing and improving the strength/muscles in my lower legs and you just have to do it....you must force yourself........be your own doctor, take control of your health, eat and drink and take only the good to put into your body, eliminate salt and sugar, two enemies of your overall health, prayers and best wishes to your health.