You should talk with your doctor about a plan. What to do when your sugar shoots up like that, when it drops too low, sick days, etc. And too, soy sauce doesn't help a bit!
"Have been diagnosed about 7 years."
Are you on some sort of diabetic medication like Metformin or insulin?
"My blood sugar went up to 441 last week and it took 3 to 4 days to get it down to 129."
What did you consume to elevate your glucose to such a risky level? And, do you not have medication to lower your glucose to a safe level w/o having to wait 3-4 days?