@Helmut I never seek to limit my carbs except I have a tendency to not go over 30-60 per meal. But if I want to eat pizza I do and I eat as much as I want.
Typical day would include fruit as snacks, bowl of veggies with tofu or seitan , then maybe lasagna, veggie burger, sandwich with a side etc as my bigger meal. Throw in a cookie and a piece of dark chocolate and some soy milk for the day. Most days are probably under 120-150 carbs and not that high in calories.
Most of my foods are not high fat so prebolusing and bolusing is easy, a half a hour before I eat and the rest when I eat. I do have to guess sometimes and I don’t always finish what I served myself, but that is the beauty of the second half of the bolus at my meal as I can adjust it. And a higher carb meal like pizza sometimes calls for an extra punch a half hour to hour after I eat, my pizza is not high fat, I think it is the absorption of a slower more food, higher carb, 100 carbs? at a meal for me.
The beauty of a CGM tells me how I am doing and if I need to make an adjustment. The beauty of retirement allows me to get on the exercise bike if I see my arrow going up more than I expected. I will not eat a meal I have to guess at and leave the house because higher numbers annoy me lol! I also will not eat a meal if my numbers are say more than 120? But I prefer to eat when I am at 95-110.