- You don't NEED to do 3 years, it shows stability and might help but is not required. We did W2 of 2024 and tax transcripts of 2023. Sometimes more proof is just better.
- You don't NEED a joint bank account. It shows marriage, but it's not required. BUT, you can send extra proof online after they receive your I-485.
Edward & Jaycel have listed what they added in the November thread, others have done the same. I personally used theirs.