Shower(newborn)

1. Need to shower everyday? Alternate day? - 2. Is it a quick 3-5min rinse? - 3. Can umbilical cord touch water during bath time? How to clean it? After umbilical cord drop, how to take care of wound? - 4. Need to use shampoo/showergel? Or when to start to use? - 5. When to start using for baby lotion? - 6. When can start using ruyi oil? -