Your antioxidant level is exceptionally high
If you achieved this value merely by means of diet rich in antioxidants, your balance between diet and lifestyle appears to be just perfect.
At your level, there is no benefit in trying to increase your value even further.
In case that you take special antioxidant supplements on a regular basis to support your diet, you might consider to reduce their dose. Make sure to maintain your balanced dietary habits and to keep as many organic ingredients as possible on your menu, though. Do not forget to pay attention to other important aspects like good sleep and physical activity.
Do not be disturbed if your antioxidant level decreases slightly in the meantime. With such high levels, this is perfectly normal and acceptable.