Need help regarding I-485 interview

[zion]

I came to United States for the first time in August 2007 on B1 visa. I am a Medical Doctor came to take licensure exam to eventually do Medical Residency here. I was staying with my father’s friend who is also a Doctor. He introduced me to his Niece in a religious gathering. Since, I did not have any Driver License I requested this girl to pick and drop me in local library. As she was free those days she agreed. We started to talk to each other often and she told me they want to rent a house for a paying guest. I asked her if she can talk to her family that I want to stay in her house as a paying guest. In September 2007, I started to live in her house as paying guest. In the mean time, I took my test. I failed in October 2007. There were no dates available so returned back to my home country in 3rd November 2007. After returning to my Country luckily I got the date for exam in December and I returned to US to take some coaching for test and take actual test. In the mean time we started to date and after taking my test, I asked her I want to marry her and will marry only if I pass the test for second time, because to get residency after two failures is very difficult. In January 2008, we found that she is pregnant because of contraception failure. Fortunately I passed my test in 30 Th January and I decided to marry her. One more thing she became US citizen just after my Test results luckily.
We married on 6th February 2008 in local court. After that on 10th we had marriage party. We filed all documents for GC .She started with Diabetes of pregnancy and the baby was delivered earlier in May 2008 and was admitted in Neonatal ICU and thank GOD baby survived and is healthy now. I continue to live with my in laws and my wife is doing a job, we have joint bank account that we use. We have common Insurance policy. I have applied to residency again this year.
I need your guidance guys as our interview is scheduled in two weeks for GC.
Can we take our baby with us? Do I need to take my Test results (pass as well as fail)?
What more documents we need to take with us during interview. Some more guidance on interview tips.

Thank you

Kind regards,

Zion

[txh1b]

They are looking for proof of a legitimate marriage, not your test results. Take pictures of marriage, family, baby, bank accounts, joint insurance cards, proof of stay in the same address etc. All these will prove that the marriage was in good faith.