How soon after direct brow lift can I have revision brow lift?

I had a direct brow lift to raise one brow which was lower than the other. I am not happy with the result. The brow is still noticeably lower than the other. How soon can I have revision surgery to lift the brow? The surgeon raised the outer half of the brow instead of raising the full length of the brow. I would like to have the section of the brow that was not raised, raised.