One feature of Marty Kendall's DDF that this person could benefit from is to identify ALL foods/meals that spike the BG more than 1.6 mmol/L (30 mg/dL), not just the higher carb ones, and modify, eliminate or eat less of them. I found certain foods/meals with <6 g net carbs spiked my BG above this limit even though theory and Dr. Bernstein wouldn't predict it. Whey protein and dairy products were the worst for me, but I now never eat them alone; I must have some other protein or fibre with them.