Any else with LADA out there

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My diabetes diagnosis changed from type 2 to Latent Autoimmune Diabetes in Adults (LADA) last year. Anyone else dealing woth this? I train for triathlons and 1/2 marathons nearly all the time and eat a low carb diet, and my blood sugars are still too high. I started Lantus last summer, and it worked for a while. I think I need to be on a full insulin regime, but my doctor isn't convincer. What has worked for you?