Hello
I was diagnosed and managed to control it with diet.
I cut out pretty much all carbs as they caused my blood sugar to spike - no sugar, no bread, no rice, no pasta, no cereal, almost no potatoes. I tried Vogel bread which is supposed to be low GI but it still caused blood sugar spikes.
Instead I ate plenty of protein and fat so I wasn’t hungry, plus veg of course but the veg didn’t fill me up. I also made sure I had snacks between meals but they had to be non carby snacks.
Here’s some ideas:
Breakfast - eggs or plain unsweetened yoghurt with nuts/seeds and fruit. Avocado. Cottage cheese or soft cheese with nuts.
Snacks - nuts, avocado, cheese, hard boiled egg, salami
Lunch/dinner - meat/fish/cheese plus lots of veg.
After the first couple of weeks, I found a few new potatoes were ok. Lentils or pearl barley (cooked lightly so still quite firm) were also ok in very small portions. But everyone is different so you may have to experiment a bit with what causes a spike and what doesn’t.
If you do eat any carbs then try to have them with protein and fat as this makes it less likely to cause a blood sugar spike. But I would avoid carbs as much as possible tbh if you want to keep it diet controlled especially at the start.
I did crave carbs at the start but it went away after the first week or two as my body got used to it.
Good luck