Adjustment of Status - I-485

Hi, Since this web site helped me so much decided to share my experience as well:

Was on F1 married to my wife (USC) in March 2016.
No lawyer was contracted and it’s doable to do by yourself. Initial filing from Maryland/Baltimore Field Office later change of address to DC.

July 12,2016 - Mailed to USCIS with I-130, I485 and I-765 Form
July 18,2016 – Email Confirming receipt of forms
August 21,2016- Biometric Fingerprinting
August 22, 2016 – RFE was sent to me – Issue with Sponsor Tax papers
September 2nd , 2016– USCIS confirmed receipt of Response to RFE / Work on case restored
Delay with Employment Authorization
Early November 2016 – Reached out to Congressmen’s Office for Status Inquiry on my behalf for EAD. Response from Congressman was that case is being worked on and overall delay due to increased workload.
November 15, - Info pass appointment in DC, while field office in Baltimore (only one I was able to have an appointment), talk to Immigration officer over counter. Submitted a request for expedite on my behalf to National Benefits Center.
November 17th – EAD online Case change to approved
November 25th – EAD card received
No changes on I-130 and I-485 till April 2017.
February 2017 – Change of address filled from Maryland to Washington DC. USCIS confirmed receipt.
April 2017 – Interview Appointment Letter sent
May 15th – Interview at Washington DC Field Office.
At the end of interview IO said that he is recommending me for approval.

Since, I was not able to find a lot of reviews and feedback on Washington DC Field Office, I am providing some information.
We were invited for 7:45AM appointment. Upon check in, were asked to proceed to 2nd floor and waited 20 minutes before immigration officer came out to pick us up from waiting room. We walked together to his office. Second Immigration officer was present in the room to observe. My guess she is new and its was part of her training. We brought huge folder with all supporting documents (leases, bank statements, updated affidavits, copies of joint travel tickets, hotel reservations, utility bills, Work and Income papers, pay stubs, contracts etc) and big photo album with all family photos. I put it on desk in front of us. All he asked for was IDs and my passport, no other papers were asked at all. Looked at my visa pages, asked why I been to India. Gave him response that it was job training. Looked at my visas. Have few Schengen visas, Middle East, US visas etc. Then all he asked was to tell how me meet each other, which was complicated since I knew my wife for 10 years initially as a college friend. Asked how I made proposal. Where we work? We told him our story. Very easy going and relaxed interview process. We were basically telling our story as it is. He been typing some notes on the go on the computer. After hearing how me meet, how I made proposal, engagement ring story. (asked my wife to show it on her hand) he moved onto generic application questions about membership in communistic organization and whether I committed crime. Yes/No questions. At the end he said he has no concerns with our marriage and wished us luck, said that he will be recommending me for conditional green card. He walked us out to waiting area. 30 minutes later I-485 status changed from Interview Scheduled to your Application is approved.

In 7 days after interview I received Green Card by mail.

Long story, short, yes waiting is hard and unpredictable. All you have to be is patient. I filled few Case inquiries online, did not got any responses. Found out that Congressional inquiries are helpful and also recorded under your A-Number which shows to IO that you been following process.
Thanks to everyone for sharing their experiences, I know those were helpful to me.

Good luck and believe everything going to be OK!