What steps can an adoptive dad take when a soon to be x wife wants to reverse an adoption in FL?

He says she can do this because a year since the adoption has not passed. The are currently divorcing and she wants to suddenly reverse his role for no reason. He pays child support now and health care insurance. The divorce is still in mediation. He has done nothing to harm his child .....he love her, what can he do? - Is this your question? Add additional information