Different people develop T2 at different rates and for different reasons (genetics, lifestyle, other health conditions, stress and eating habits all play a part). So no one can know what the future has in store for you.
fortunately, low carb seems to play a helpful part in T2 in either halting, slowing or ‘reversing’ the insulin resistance and raised blood glucose levels.
I’m afraid that only time (and sticking to low carb) will reveal what it will do for you over the next few decades.