Welcome
@budbud
Metformin will help a little with insulin resistance and reduce the amount of glucose your liver releases, but it can not reduce the glucose in your blood that comes from your diet, it just doesn't work like that. To reduce your blood sugar levels that are due to the food you eat, you need much stronger medication's. Or of course you could alter your diet and stop eating meals that raise your sugar levels.
Use your meter to check how your meals are affecting your levels, take a reading just before you eat and again around 2hr's later, the difference will show you what that meal has done to your levels. If the post meal number is more than 2 mmol above the pre meal test then there were too many carbs in that meal for your body to cope with. Keep notes of what you eat and what your sugar levels were, you will soon see which meals you need to rethink or even drop from your menu.