For checking the transcript: https://www.buzzsprout.com/2379282
Sleep on it
means to take extra time, especially overnight, to think about a decision before making a final choice.
Examples:
1- Amelia was torn between two apartments she really liked, so she decided to sleep on it instead of deciding right away.
2- My sister asked if she should cut her hair super short, but I told her to sleep on it—once it’s gone, it’s gone!