When a diabetic patient stop feeling the symptoms of hypoglycemia (after how many times of this case in average)? & if a person had hypoglycemia symptoms many times in 2 months is he in danger of not feeling the symptoms of hypoglycemia after that?

I'm not sure how many hypoglycemia episodes or insulin reactions it can take, but some patients do get hypoglycemic unawareness and it is dangerous. The way to combat this unawareness is to avoid hypoglycemia for 2 or 3 weeks by letting your sugar run a little high & never below 55 or 60. You must work closely with your MD during this period though as you eventually readjust your dosing.