Lynn - If you look at my signature, under this posting, you will see my numbers have been in the non-diabetic range for several months. In fact, my only tests in the diabetic range were at the point of diagnosis. And, yes. I have worked quite hard to achieve that situation.
I think you can manage it, without too many sacrifices, but there are no guarantees. It depends why you achieve pre-diabetes in the first place. It could be diet, reducing exercise, steroid use, weight gain or even your pancreas getting a bit tired and unable to cope with your previously usual way of living. Of course, some of those things, like weight gain, don't or probably don't apply to you, but those show the non-exhaustive scope of reasons why these things happen.
But, you have to ask yourself. If/When you achieve this, what does it really mean? What would your intentions be? Just crack on as you always did? Stick with any changes you made on the journey or something even different to taht.
Pre-diabetes is just a label, reflecting a state. Does the label matter, or how you deal with the fall-out of the diagnosis? (Rhetorical question for you to consider.)
I suggest you perhaps take a bit of time to re-read this thread, back from the beginning. There is LOADS of information on it, including the answer to the question you posed this morning (reply #33). There's so much to take in at the outset, there's no way you can take all of it in, so a little revisit is probably timely.
I'm sure you're starting to see some interesting data building up from your testing. It's quite fascinating, No? But, I will reiterate that, for you, I think it is really important you test all of your previous diet - including your KitKat and any other such foods you have eaten in the past. You may be absolutely fine on them - especially if you understand when you might be able to consume them. For example, it might not be best to have them as dessert after the bread that disturbed you yesterday, but after an omellete, salad or something else lower carb, it could be absolutely fine. I do urge you not to go too OTT in how you restrict yourself.
When is your next test due?