I would try eating only half of one at first. Test before you eat it, an hour later and 2 hours later. That will tell you if your body can handle them or not
I'm a non-insulin-dependent Type 2 and I can eat bananas without it causing my blood glucose levels to go high. In fact, my testing has never revealed that I have a problem with any fruit. I eat loads of fruit - it is a big part of my diet.
I can eat 1/2, maybe you can eat more. OR less. We are all DIFFERENT. Try it and test what your blood sugar is in 30, 60, 90, and 120 minutes. That is the only way you will know.