3rd failed sugar test

I failed the one hour test, it had to be 139 and mine was 141. Then failed the 3 hour test fasting blood twice. It has to be 94 and Last time my fasting was 95 and I ate a burger, onion rings, and peach cobbler the night before. This time all I had was lean steak strips and broccoli and cauliflower and it was 119. I ate a breakfast burrito after and 2 hours later it was 98. It’s higher the longer I go with less food. My doctor put me on a low calorie diet and told me cut back my portions a ton, but it’s when I eat less that my sugar spikes. 😩 I’ve tested my blood for a week before the tests and it was always around 75-88 in the morning and under 120 two hours after meals. It’s only when I fast after low carb that it spikes so I don’t feel like starving myself is going to help. Any one else’s like this?