What it says is, “I have Type 1.”
This is not enough data to get a good idea what is going on, but I would suggest doing one thing: choose one meal to eat the same thing every day. (It’s breakfast for me). You don’t have to do it forever like I do, but having some area in your day that the food itself can be considered a constant may give you a deeper insight into your overall pattern.
If you can, do some overnight basal testing. Going really high and really low are often “rebounds.” If you don’t know where the initial event is, it’s hard to correct it.
A word about pre-bolusing. Pre-bolusing is a very powerful tool for getting your BG back in range. These three moments in your day are your largest concentration of insulin all day. This has been the #1 thing that I have done to get control of my numbers.
Unfortunately, the way you learn how to do it is by doing it. But here’s a few ideas about it and about food in general:
Do you have a number you’re aiming for before you eat? I am aiming for 90, so if I’m above it by 30 points, I wait 5 minutes before eating after bolusing. (I also keep an eye on my CGM, but when I am going to bolus, I test)
Do you have a certain carb count in mind for every meal? I am NOT low carb. My number is 60g of carbs per meal, but I am 6’3" and 174 pounds (and have been for quite a while). I may go a little above, but not much.
Are you making sure you get protein with your carbs? Protein helps regulate the uptake of glucose from your carbs (as does fat). I find, too, that protein without carbs can do weird things to my BG.
That leads to your diet. What I mean by diet is “what I eat.” Sitting down with a nutritionist was extremely helpful in finding the right amount of carbs and balance in my diet. Plus, the nutritionist helped me become a carbohydrate whisperer©. An accurate count will determine how well you bolus.
Consider the nature of your food. I have heard some say that carbs are carbs. In a sense, yes, but some carbs are more carby than others. You will discover, if you pay special attention, that some foods are your Kryptonite. Bananas are a wonderful fruit-- but they just don’t work for me anymore. Grapes are glucose hand grenades. I can eat them, but it makes control more difficult.
You may find ways around that. Brown rice instead of white. Whole wheat bread instead of white. The Beatles instead of the Stones.