Assalamoalaikum.
What I observed is the people who hired lawyer are getting long processing time to get the visa. In my family and relatives everyone gets there visa in 6-8 months max. We all submitted the application without hiring a lawyer or representative. Also, I sponsored my wife on 20th September, 2019 and Alhamdulillah they received the application on 23rd September, 2019. Also got the AOR on 9th October. Alhamdulillah every thing is going smoothly rightnow and i m hoping that InshaAllah it gonna take few months to get the visa InshaAllah. But still we needs alot of prayers