Burning feet. B12 - 765. 1 pg/ml!

Suffering from burning feet since last 2 months. Feet feel very cold sometimes even in normal to hot temperatures. Frequent paresthesia in legs. Sometimes palms become very very itchy.  Burning feet does not let me sleep. Feet being in water makes the burning sensation even worse at night.Hba1c, vitamin B12, Thyroid, cholestrol all are within normal range. Reports are attached. If everything is normal what could be the cause of burning feet. The burning gets intense at sometimes and some times feel mild but there 24/7. Medicines are not improving my symptoms. I am lactating mother of 11 months old baby. Hba1c   -   5.2 Total Cholestrol 136 mg/dl TT3   -  76.11 ng/dL TT4   -  8.9      ng/dL TSH  -   2.07   IU/mL Vitmain B12 - 765.1 pg/ml