it's very difficult to get good control on mixed insulin, and it appaears not to suit you as you HbA1c is very high. For better control I would advise you to ask about going onot basal bolus insulin. This would mean taking one (generally) injection of long acting insulin, and then an injection of fast acting insulin every time you eat. It's more injections but the doses you give are more suited to need and match the amount of carbohydrate in your meals. it will give you flexibility and freedom.