The most important thing for you is to control your blood sugar levels.
If your blood sugar levels are controlled,even then you have to keep taking metformin
If your sugar levels are not controlled then ou have to take some additional anti diabetic.
Keep control on your diet and reduce your weight further.
Must do regular exercises,not only to reduce your weight but also to reduce insulin resistance
Must make it sure that you have to control your sugar levels meticulously to avoid future micro as well as macro vascular complications.