If a scene or an idea is repeated one way to look at this is to decide. Does the repetition enhance characterization? Does it add to the plot? Does it add new information? The final question to ask yourself is the last one. Repetition can be used if the second appearance adds to the knowledge providing the characters and the reader with new material.
So when you revise, pay attention to repetitions in any form and find a way to make your story sing.