Proofs for Interview

I have an interesting journey in the USA - Came in 2020 on F-1 visa, got my H-1B in October 2024, got laid off in October 2024, filed for I-539 and changed my stay in the US on B2 visa in December with last day of stay as June 2025. My girlfriend and I decided to get married for me to stay in the US in May 2025, so we did and filed all the documents with help of a lawyer. I have also had my biometric appointment last week. Since we have been married for a short time, what extra precautions or proofs should we get for the interview?