james123321 - welcome to the forum.
I am sorry you are struggling with your bg numbers, unfortunately the medication on its own wont shift your blood glucose, you need to help it along by reducing your carb intake.
Have you got a meter and test strips? If you have then start testing your bg before and then 2hrs after meals, this way you will quickly learn which foods you should eat less of or maybe even cut out totally.
Do you exercise? This would help reduce bg numbers, but dont do any exercising whilst you have high numbers.
You can of course take more medicines or insulin if you cannot or dont want to reduce your carb intake, you have a few choices so dont despair, find what suits you.
All the best