So, two things. When you use whey, always go for the one that contains as high a percentage of Whey Protein Isolate that you can. This is the most refined form of Whey and My Protein sell a version.
Secondly, whey protein can raise blood glucose levels in diabetics as it causes an insulin reaction with no carbs, due to the amino acid levels. This also solicits a glucagon release and T1s see noticeable increases, T2s usually see some increase, though it varies for different T2s.