Apologies in advance if this has already been asked or you have already tackled, but have you taken everything back to basics. Have you researched carb counting and different GL/GI of foods to ensure you are being absolutely accurate and have you done comprehensive basal testing to ensure the foundations are right? Do you have flash or continuous glucose monitoring? It might be worth, even for a short time if you can afford it, investing in this, to really understand what is happening to you blood sugars. If you can take the full picture to the specialist team, with CGM data, and food and insulin diary, it may give them something to investigate and take seriously?