I had the same experience when I first went on insulin and got my BG under tight control. Your body became accustomed to high blood sugar so that when you reduce it to a normal range you start to feel symptoms hypoglycemia. This should go away as you maintain normal BG levels. It did for me and I no longer fell hypo unless my sugar goes under 65 mg/dl (I don't know what that corresponds to on your scale) which is as it should be

It does go away as your body gets used to lower blood glucose. There's no need to treat it, but if you are truly feeling awful, you can treat it. the key to treating a hypo - real or false - is to eat only enough to bring glucose levels up slightly. Over-treating either sets you up for an ugly roller coaster ride with reactive hypos...not fun. A true hypo needs to be treating with sugar - a few hard candies, a couple of glucose tabs, 4 oz of soda or juice. A false hypo is better treated with a macro mix - a peanut butter cracker or two, a cheese stick, etc.. You feel like you're doing something, but what you're eating won't send blood glucose (which doesn't truly need to be higher) soaring.