Whenever you’re uncertain about when to speak to your neighbor about Christ, use this rule: Better sooner than later.
Every single Christian is to be a gospel carrier, capable of showing another how to receive forgiveness and become a new creature thanks to the gift of God.
Only through speaking the gospel can people be saved. Without speaking, no salvation occurs. A good example is not sufficient. Others must be taught, Ac 11.14; 1 Thes 2.16.