Varied responses are to be expected, we all have our experiences and our preferences.
I’ve got Dexcom and the tandem pump which work well for me, the Dexcom made a bigger difference in my diabetes management than the pump did. I turn down my basal rate for exertion by having an “active” profile on my pump, and if I’m sitting around a lot, I have another profile, called “lazy”. I recently retired, and do a more active, and my insulin needs have dropped significantly as a result. I take around 25-30 units a day.
I eat three meals a day, no fasting, and NOT high or low anything, except very little highly processed food (eg junk food). I’m not keto and I not vegetarian and I’m not paleo and I’m not gluten free and I’m not dairy free and I’m grateful that I can tolerate pretty much anything, can exercise, maintain a stable weight, and keep range between 80-90% of the time and with A1C of about 6%. I rarely have lows, maybe 2% of the time.
But everyone is different. No two people with diabetes should be competing or comparing anything except perhaps to learn.
I target 40 g carbs at breakfast and similar at lunch, supper is about 70 g. My breakfast may be toast with peanut butter, or eggs, or oatmeal — I make sure to have some protein with each meal or I get a quick spike especially with high glycemic index foods.
Lunch is usually a sandwich and soup, or whatever leftovers we have. Target 40 carbs.
Supper could be anything. There’s always some protein like chicken, tofu, beef, fish, lamp, etc and a vegetable something and rice or potatoes or pasta. I can eat pizza, as long as it isn’t too much and it’s thin crust (which I prefer anyway).
Except for limiting carbs a bit, I eat pretty much like the rest of my daily and social group does. Actually some of my friends who don’t have diabetes are more carb-avoidant than I am!
I avoid chips.