In Chapter 13, Atticus says "It's not a time to worry". What does he mean by this?

Atticus is referring to the trial and possible backlash over the trial. Scout, however, is merely worried about Atticus and changes. She doesn't understand the rest of it.

“Atticus, is all this behavin‘ an’ stuff gonna make things different? I mean are you —?”

I felt his hand on the back of my head. “Don’t you worry about anything,” he said. “It’s not time to worry.” When I heard that, I knew he had come back to us. The blood in my legs began to flow again, and I raised my head. “You really want us to do all that? I can’t remember everything Finches are supposed to do…” “I don’t want you to remember it. Forget it.”