The important thing about low carbing for diabetes, is that everything you've ever been told is healthy to eat ISN'T. It's the stuff that has been demonised for about 50 years, that is the correct food for us.
Always think FULL FAT. If something claims to be low fat, low sugar or diabetic friendly, then be very skeptical, and read the ingredients, you'll come to learn that food manufacturers use every trick in the book, to cover up what's actually in their product. There are about 40 different names for various types of sugars. It can be a minefield, but you will learn, and we can guide you along the way.
As to not eating all day to get your numbers down, it rarely works, until you regain more control, or become fat adapted, if eating a low enough amount of carbs. At this moment in time your body is used to having a higher level of sugar in your blood, your liver will happily pump out more Glucose to top you back up again, whether you've eaten or not. Only once you attain better control, can it eventually realise it doesn't need to boost things as much, ie lower levels become the norm. These things don't happen over night, and you will have slip ups along the way. Don't beat yourself up when they happen, they are a lesson. This is why we all say it's a marathon, not a sprint.
From my own perspective i would say FAT IS YOUR FRIEND. Real fat that is, lard, Dripping, Butter, Coconut oil proper olive oil, these are the things to cook in. ( who'd have thought that fried food, was actually very good for you).
You're at the start of your journey, which will last the rest of your life, which approached correctly should be a long one.
The best decision you've made so far, is coming here, nobody judges, and everybody tries to help. There a many ways to skin a cat, the advice we give has been experienced and known to work, but not for everyone. It's your mission now, "should you wish to accept it Jim", is to find which bits work for you.