I751 REF and my Timelines

[natchaaria 0]

I am worried about my case and here is my timeline and think it is kind of off processing time.

Case was received - July 27 2018
Fingerprint review was completed - March 08 2019
Fingerprint review was completed - July 19 2019
Case transferred and New Office has Jurisdiction - August 20 2019
Case Was reviewed at my local office - August 20 2019
Case transferred and New Office has Jurisdiction - August 21 2019.

On the April 06 2020 I got REF letter about need more evidence about need proof of good faith marriage.
And I send everything that I have on April 09 2020.

it was arrived at the USCIS office in Montgomery, Alabama  on April 10 2020. 
Since then I have not seen anything change in my infopass at all.

The last action that they did is on August 21 2019. 

I just want to know at least they got my documents that I send in and how long it is going to be. 

Here is the list of documents that I send in, would it be enough? because When I send my case back in 2018 I did not send much.
- Tax return that we did together 3 years back
- Car insurances of 4 cars which have me, husband, mother in law, father in law name
- Me and Him life insurance have each other as a beneficial. 
- Joint Back account 
- Lot mortgage that we bought together also lot insurance and HOA fee that have both our name
- Driver License shows same address
- Paycheck shows we work together 
- Affidavits letter from one friend and another from mother in law. 
- Trips that we been travel together pass years 3 Domestic trip and 4 International trips for this mean like hotel reservations, air tickets, travel insurance, and pictures.

I really worried because I have not seen anything change on my timeline like we send REF letter or we receive your response about REF 
should I contact them?
 

Edited April 22, 2020 by natchaaria