Yes, you are diabetic. It does not go away, you have been doing all the right things and your BGs are coming down.
As you get the BGs down the old pancreas heaves a sigh of relief and has a bit of a rest, then when you eat something a bit carby the pancreas, feeling a bit recharged so to speak, kicks in with a bit more insulin to cope.
With care you may be able to keep your BGs down and manage for many years without needing any or an increase in medication.
I have managed 10 years so far. But I know that eventually I will need a bit more help. That's the way it is.
H
PS Fat slows down the absorption of carbohydrates. If you have to eat chips therefore, eat very fatty ones, they are better for you.
H