Thank you!!!
For I751 she asked my spouse about my full name, my date of birth, where we got married and when. She asked me my spouse's full name, her birth date.
For N400 she reviewed the application with me and updated whatever had to be updated, she asked for a lease since our IDs were from another state, she asked for any additional evidence we brought, she conducted the civil test which was easy (from the 100 questions then read and write)
I took joint taxes for 2021, joint car insurance for 2022, joint health insurance for 2022 and the last three months joint bank statements and gave her all of them.
Good luck 👍.