Hi. Everyone is different so it is impossible to tell although a c-peptide test might give some indication. I wouldn't worry as you seem to be doing well. People who use 'scary' amounts of insulin are likely to have insulin resistance which with your BMI is unlikely. My insulin needs have slowly grown over 5 years since I started. My BMI is good so I don't have insulin resistance. I don't have large amounts of insulin (16 Basal and a Bolus ratio of perhaps 1.2) so I suspect you may also not see a large increase?