If I asked the question "I weigh 80 kg, am I over weight?" no one would be able to answer. It is more complex than that, you would need to know my height and to a lesser extent my sex and if I were a powerful muscular person or not.
The c-peptide test is even more dependant on other things , than is weight. All that it tells you, as you may know, is how much of your own insulin you are making. It is not a simple matter to go from this information to a knowledge of what your own problems are, even when all the other factors that are involved are known.
Your Dr. will have all your medical records available, but even then he may not be able to reach a firm diagnosis. AND I certainly would not even attempt to do so. Sorry but you will have to wait for an expert opinion.
Normally we tend to say that once you are diabetic you remain diabetic although in remission. If you were to go back to what you were doing before diagnosis the problems would almost certainly return.
Keep your fingers crossed and you may not need medication for many years, if you stick to a low carb diet.