As you have reduced your HbA1c rather than increased it again, medication is unlikely
However, lifestyle changes, especially diet, are for life, not just a few weeks I'm afraid. If you return to your old ways, you are likely to progress upwards.
I see from your other thread that you have been following the 8 weeks sugar diet. You now need to sort out a more sustainable low carb diet. One you enjoy, and one that will help your blood sugars (and at the same time, your heart). Have you any plans?