I'm eating my meds, trying to eat the right foods, but keep thinking I'm doing everything wrong.
You're definitely not doing everything wrong!
For starters, you've reached out here to find support in getting a grip on your diabetes, and that's no small thing, well done.
I think you might want to have a closer look at what you're eating.
As a diabetic, it's carbs we can't deal with very well. All carbs turn to sugar in your body.
I take it you already have a meter? You can use it to see how you react to different foods by testing before eating, and then again two hours later.
The Weetabix is likely not doing you any favours, so what about testing before and after, and on another day try a breakfast of bacon and eggs (or eggs and cheese if you don't eat meat), and see the difference in results on your meter?
If you'd like to read a simple introduction to how T2 works, I'd read this piece by one of our members:
https://josekalsbeek.blogspot.com/2019/11/the-nutritional-thingy.html
Don't give up, there's lots you can do!
And if it turns out you need more medication than the metformin you're currently taking, there's a whole lot of medications to try before insulin.