I don't know how old your child is, but please, don't do something as harsh as divorcing your child's father on the advice of a child. I remember my kids were pushy about me divorcing my husband, too. Now that they are grown. My son who is the man's biological son, he asks me, "Mom, you were the adult, why did you ever listen to a couple of teenagers?"
JWs are going to be pushy about their beliefs because they sincerely believe you and your child's eternal life are in danger. Does that really count as abuse? Divorce will profoundly affect you and your child in ways you cannot predict now. Unless there is severe abuse of the sexual or violent kind, can't you figure out a way to live with your spouse in a way that will work for you and your mutual child?