Below is an excerpt from this Sunday's WT.
Maybe you express that you want to do deeper study like Timothy and research of some of the questions raised. For example, you can say you would like to research the question, Why do I believe that God exists? You can say something like although you feel you know the answer, you want dig deeper. It would also help you when teaching others.
Then maybe you can actually start researching, if you haven't already, and start raising points/questions to your parents. You can possibly drag this out a while, especially if you dont have much time for researching after work, meetings, field service etc.
YOUR CONVICTIONS
3, 4. What lesson can young ones learn from the example of Timothy? 3 Think about how you would respond to these questions: Why do I believe that God exists? What convinces me that the Bible is God’s inspired Word? Why do I feel that living by God’s moral standards is better than adopting the lifestyle of the world? Those questions are not designed to create doubts in your mind. Rather, they can help you to follow the apostle Paul’s admonition: “Prove to yourselves the good and acceptable and perfect will of God.” (Rom. 12:2) But why did Christians in Rome need to prove to themselves something that they had already accepted? 4 Consider a Bible example. Timothy knew the Scriptures well. He had been taught “from infancy” by his mother and grandmother. Nevertheless, Paul urged Timothy: “Continue in the things that you learned and were persuaded to believe.” (2 Tim. 3:14, 15) According to one reference work, the original-language word for “persuaded” has the sense “to be convinced and certain of the truth of something.” Timothy had made the truth his own. He accepted it, not because his mother and grandmother told him to do so, but because he had reasoned on it for himself and had been persuaded.—Read Romans 12:1.