Adjustment of Status - I-485

I wanted to share with you my AOS timeline and experience.
I've been married to a US citizen for 15 years. We have a 7 year old. I was on a B2 visa, traveling back and forth and was never out of status.
I filed concurrently (i-485/i-130/i-131/i-765) Chicago office
 Year 2019
3/20 Package sent
3/21 Package received
3/27 USCIS confirmation texts
4/1 Biometrics scheduled
4/4 RFIE was mailed to me (updated taxes)
4/15 Biometrics done
4/16 Biometrics completed
Case was stalled for almost 3 months. It took me this long to respond to the RFIE
6/27 USCIS received my response to RFIE
7/5 i-693 Courtesy letter received
7/10 Case ready to schedule interview
8/27 Interview Scheduled
9/3 Interview letter received
9/26 EAD card in production
9/27 i-765/i-131 approved
10/1 EAD card was mailed
10/4 EAD card in hand
10/8 Interview - Philadelphia Field Office - case was approved on the spot
10/8 Card in production and i-485 case approved
10/11 Card was mailed to me
The whole process took 6.5 months.
I used a lawyer to file but decided to take a chance and save some money and not to use him for the interview process. Actually the IO thought that was the best decision, not to bring in a lawyer because our case was pretty straight forward.

Philadelphia Field Office experience:
We had a great experience. We parked at 10:20 am. There is plenty of street parking (2 hours) or you can also take the MFL line. The office is a 1 minute walk from the station. Everyone was very friendly and respectful. There is airport type security when you come in, then they send you to the 2nd floor. We were very lucky to be called in as soon as we sat down. Actually, i think we were called in a few minutes before our scheduled appointment. The IO was friendly but very professional. We took the oath, he asked the i485 questions, etc. The interview lasted about 30-40 minutes, but it felt more like a friendly conversation. He asked us how we met and casual questions like where our child was at the moment. At no pint did we feel like we were under any pressure. We had lots of evidence, yet he didn't ask for any specific documents. He did take his time to look at our photo album. I had about 150 pictures collected over the last 15 years. I organized them in chronological order. He made comments on them as he browsed through the album. We actually had fun going down the memory lane as we looked at the pictures. He found that very amusing. At the end, he approved me on the spot for the 10 year card. He actually congratulated us on our family and our relationship. We didn't have to sign anything, he just told me to expect the card within the next 10 days. We were back in the car at 11:35. God is good!!

My advice to you is not to stress out. I used to check my status 20 times a day but for some odd reason, it was only on the days that I was too busy to check that my case updated! Also, I've noticed some people freak out when they get an RFE. I wouldn't stress it. In my case, it made very little difference on the timeline, even though my case was stalled for almost 3 months. The other thing I wouldn't do is use a lawyer, unless you have issues. My case was pretty straight forward, I should have just filed on my own and saved a lot of money!

Good luck to you all, keep the faith and be patient.