Does the car have a VIN?
I did this with my abandoned civic in 2019, it took over 6 months. I called the office in N Van multiple times. There has to be at least 3 people in that department, from the sounds of it they each handle maybe 1 piece of paper per day. After it was all said and done my takeaway for the next time (before covid) was to hand deliver the mail to the office in N van. Not sure if they will let you do that with covid. I figured I can stamp at least 1 page a minute, no idea why these bastards are so lazy. I can't imagine they are trying to process thousands of vehicles.
In my case the original owner showed up and he signed the transfer papers.
I made a vid but never posted it. Here were my thoughts at the time.