I do believe that it is more complex than you have been told.
A weak initial insulin response is asymptotic of some endocrine conditions.
It does not ultimately lead to a further condition where you need insulin injections.
I have never heard of having RH and Lada, type T2 and diabetes, yes!
I say this because, it is the second insulin response that causes the hypoglycaemic episode, not the first, the trigger is the high glucose derived from your food and drink, because of the weak initial insulin response. RH in most cases is about the overshoot of insulin. So, if your pancreas does stop production of insulin, your reaction would cease to happen, no hypoglycaemic episodes. Your pancreas is not lazy, as I found too many times, it is over producing, because of interrupted signals and changes the message to your pancreas.
Fasting is very good for RH.
With intermittent fasting, very low carb diet, and good exercise, your control over the condition can be achievable and your health will improve dramatically.

, of course, according to many endocrinologists, RH does not exist.
So anything is possible.