You cannot save your child yourself no matter how hard you try. You are in a position of trust alone. This is good because it is the only way to please God (Heb. 11:6). Your rest in God, while simultaneously praying to the God who answers prayer, will be an encouragement to others in the same situation It will also help you respond to your child more positively, and will make your life far more joyful than your anxiety ever could.