Thanks for the menu.
I low carb, and have done a fair bit of testing to map out what foods affect me, and how.
But, of course, I can only speak for myself.
In your menu, I would definitely have problems with the oatmeal, the noodles, the apple, orange, and the bean soup.
Portion sizes are key.
But the best way to see if you are getting high blood glucose with a certain food is to test before it, then 2hours after. If your blood glucose has risen by more than about 40 (of your units, which is approx 2.0 mmol/l in our units), then the food you've just eaten has more carb in it than you can currently tolerate.
Apologies if you already knew all that!
Suggestions you could try:
Ditch the oatmeal and have eggs or bacon and eggs, ham, ham and cheese (yum!), berries and full fat Greek yogurt, or berries and cream, for breakfast.
Swap your apples and oranges for berries, cheese, nuts, low carb protein shakes, jerky, biltong, coffee with cream.
Are you American? If so, please don't go down the half n half route. That stuff is vile, and not what will benefit you. You want proper, dairy heavy cream. And enjoy.
Some people are ok with beans. Sadly, I'm not. You can confirm your tolerance with testing. But if it is a bought soup it may have hidden carbs, sugar, flour, maize starch, tapioca, potato, etc.
If you want some inspiration for low carb menus, have a look at
this thread. It is full of great menus, ideas and moral support. It'd be great to see you posting there!
Hope all of that helps.
The truth is that most of us just cut our carbs down until we reach a level where we keep blood glucose under control. Why would we go super low carb if we don't need it? But if you spend some time testing before and after food, note it down, with a record of what the food was, then you will very quickly discover the problems. (Mine are grains, ALL grains, but wheat is by far the worst)
But for you, you might find it interesting to cut all the foods I've talked about above. Just for a few days. If, after that time, your blood glucose hasn't started dropping, then I'd make another appointment with the doctor. Running at 300ish (19mmol/l) is far too high.
Good luck, and please keep posting!