How can I lower my fasting blood sugar? 5 weeks ago I went off my insulin and started a very low carb diet. My 2 hr. blood sugars and bedtime sugars are within range but my fasting bloodsugars are still 170 to 193 . What is causing this and how do I get them down? I also recently started yoga twice a week in the evening to see of that would help. I eat at 6:30 every evening and have a hand ful of nut for a snack .