I have always found that the amount of carbs I can safely manage at each meal depends on the time of day. My strategy is zero carbs at breakfast other than a dash of milk in my tea, a few more carbs at lunch, and a few more than lunch at tea time. I don't snack between meals, unless you count cups of tea. As I am 5 years down the line on this journey I am no longer testing post meal unless I am curious. I rely on my fasting level, the level before my evening meal and at bedtime to gauge how I am doing. My target range for these times is 4 to low 5's.