Conventionally, we measure only the morning blood sugar levels. It is equally important to check the post lunch glucose levels as it is the largest meal of the day to know the ability to handle carb rich meals. Sometimes the fasting blood sugar is elevated due to the dawn phenomenon as it is a normal one ( due to a rise in counter-regulatory hormones) up to 120 mg% ; in these cases make sure that the pre-meal ( lunch and dinner ) & are fine and well within the basal range. In this scenario , there is no need to treat the mildly elevated fasting glucose levels. Calming down your nervous system and grounding in parasympathetic dominant mode often helps.