My glucose used to all come from alcohol. I lived above 20/30 blood sugar and would not count carbs. My HbA1c was also 127. I’m a ketone-prone diabetic and always argue with my diabetes team about my carb levels. I follow a ketosis-like diet but don’t have my fat content high enough for my body to produce ketones, which can be dangerous for me. I live between 20 grams to 35 grams of carbs, and rarely go over 50 grams. Not only do I live between 3.9 and 5.0 blood glucose, with 3.9 not feeling low for me, but my HbA1c is now 28. My mental health has drastically improved from low carbs, and hunger levels from wanting to snack are non-existent. It does take time to adjust to low carbs, and I can sometimes drop sugar levels when I exercise too hard, but overall, it's worth it.
My body now does not react to any spike in sugar. For example, if I eat something like a 360-gram giant Toblerone, which is probably 100 grams of carbs, it won’t even move my levels.
What I’m trying to say from my experience is: if you’re living on high carbs and an unhealthy lifestyle, make the changes you need to. You won’t regret it.