Hi,
Welcome to the ehealthforum. I am glad to help you out.
the symptom of tingling in the feet is more suggestive of the development of neuropathy rather than a symptom of hypoglycemia. It makes sense to consult a neurologist and get a nerve conduction velocity test done to rule out diabetic peripheral sensory neuropathy.
It is not good to have episodes of hypoglycemia as each episode of hypoglycemia can induce a rhythm disturbance of the heart which can be life threatening.
You will probably need to adjust the dose of insulin and maintain a fasting sugar between 100-120 and a post prandial sugar of less than 160. Please consult an endocrinologist for the same.
I sincerely hope that helps. Take care.