Welcome bad hombre! It's a wild ride, but I am glad you are getting relief.

When DACA was executed, we had to wait about 1-2 months for implementation. I would give about the same timeline to your process, probably 1 month longer because it's a new incoming administration. However, once things settle in, Mayorkas should be able to come out with a good process. I believe you can probably start applying for this in May 2021.