Cereal would spike my BG that high too, so I don't eat it. Carbs = break down into sugar. Your meter is telling you that cereal is not a good thing to eat. It would spike most type 2s. Foods like cereals, breads, rice, and pasta are all very starchy/carby and most type 2s have a problem with those foods.
Sounds like you need to rethink your diet. Try eggs and bacon for breakfast. Or a veggie omelet. I'm sure you'll find that it's much friendlier to your BG.
It does not sound like your doc is behind you, but that's more reason to take control of your own diabetes, educate yourself, and figure out what you need to do to get healthier readings.
I feel that many doctors are not aggressive enough with their treatment of type 2. It's best if you educate yourself and learn as much as you can about managing this disease so that you aren't relying on your doctor, but having them be a partner in your care. I self-manage my D. I've spent enough time reading and learning about type 2 that at this point, I'm more knowledgeable than my GP. I see her for med refills and to order my labs. If I feel that my meds need adjustments, we discuss it.
If it were up to my GP, she'd say I don't have to test BG or take meds since my A1c is so low. I disagree with that approach. I would probably not have achieved this level of control if I went off meds and stopped testing.
I encourage others with diabetes to do their own homework on this beast we call type 2.