you should be testing before a meal and 2 hrs after meal, that will give you a good idea of how your meals are affecting your BG
and how bad your insulin resistance is.
a low carb no sugar diet should work and recommended by every website
my routine is 1 hr after a meal I go for a run, then 2 hrs after meal I test my sugar
it is usually lower 2 hrs after meal than it was before meal
You need to consult diet website but I eat these exclusively
Chicken, fish, tuna, bacon, eggs, mushrooms, asparagus, cauliflower, broccoli, brussel sprouts, beans, onion, celery, lettuce and only drink water
exercising helps overcome insulin resistance by getting my glucose and insulin into the muscles and organs
my blood sugar was 18.5 a month ago, now my average reading is 5.8 with no meds
good luck, talk to your doctor and a dietician