My mom has type two diabetes and she manages it very well. she has a balanced, healthy diet and makes sure she checks her blood sugar level and takes the proper amount of insulin at the proper times. Recently she has been taking novolog 70/30 25 units/am and 10 units/pm and lantus 5 units/pm. her blood sugar level has been wildly fluctuating recently and this is very unusual. she's scared to go out because of the wild fluctuating. what could be causing this all of a sudden?