I would suggest looking at what you're eating. Count the carbs for everything and log it along with your resulting numbers and your novomix dose. You will probably find a correlation there. Also it may be the type of carbs you're eating are resulting in high numbers. I've found that removing my food triggers (rice, even brown rice bread, even whole wheat) has given me good control. Your trigger foods may be different. Only keeping track will allow you to figure them out. You'll get great advice on this forum from people with a lot more experience than me! Listen to it all and take what works for YOU!