It is good to note that you are eating and exercising well. However, it is dangerous to make any changes in the insulin
dosage by yourself without consulting your doctor. I do not think it is a wise idea.
In addition, changes in the insulin dosage have to be made once in 3 months after doing the gylcosylated hemoglobin
test by your doctor.
Please consult your treating doctor and then change the dosage.
I wish you a healthy life.