Not the Xmas present you wanted, I guess!
Mine was 83.
I went straight into a low carb/low calorie diet and probably did < 50g of carbs a day.
I didn’t cut carbs completely, and still ate fruit and a lot of vegetables: onions, tomatoes, oranges, apples (in small amounts), fennel, berries, peppers, celery, cauliflower and broccoli. I have small portions of potato and also make daal with lentils.
Within two weeks my eyesight returned back to normal (It has been getting blurry.) and all the symptoms of high blood sugar (mine was leg pains) had gone.
Note: I did it very quickly, but some people here say it should be done slowly. I had no idea snooty that at the time!
I try to keep saturated fat low, so only have modest portions of things like cheese and don’t eat red meat at all.