Adjustment of Status - I-485

Hello All,
Both me and my wife's EB case status "Case Transferred" from Nov 2018.
It's normal, to not change case status at all, till get an update for interview ?
And any advise how long our waiting time could be ?
Also will my transfer add additional waiting time ?
Please advise.

Here is the details about our employ employment based case.
    
 Oct 29th 2018 - Package sent from California, Los Angeles - Nebraska Service Center
 Mid Nov 2018 - receipt notice
 Early Jan 2019 - EAD card received for applicant (me - currently in H1b)
 Mid Jan 2019 - EAD card received for my wife (dependent - currently in F1)
  - No status update from Dec 2018 till now for me and my wife (both cases say "case was transferred to another UCSIC office an they have jurisdiction now". It transferred to National Benefit Center)

 - After 185 days from the filing (May 06, 2019: I transferred from my company California office to our Raleigh, NC office: same company)
 - Submitted address update and got a confirmation letter end of May 2019
 - Company lawyer submitting i-485 supplement j by mid Jun 2019
  
 Note:
* No Fingerprint appointment received for both me and my wife. So we requested company lawyer to submit an inquiry to check on this.
* End Jan 2019, Received response to my wife's inquiry informing they used the photos we sent with the packet and used fingerprint in the system
* No response for my inquiry. But I am keep getting notification emails every month now from USCIS saying, no update on my case and last action taken is on Dec 20th, 2019. (lawyer told us that, most probably USCIS have done the same thing as my wife for me for fingerprint and for photo)