Hi. I want to add some thoughts
1 ) k1 can take from 1,5 -to2,5 years waiting now because of vivid
2) when you are here you can apply aos and get EAD to work quickly
Our case took 2 years from filling till visa in hand andv7 months for green card U didn't get EAD just GC right away because as officer said our case is easy.
We were in California center to I
If I were you I would not switch because most people after covid started applied to cr1, second reason it will take time to get approved that you spent already with k1 route. It's up to you. You should study cases in your country it can be vary from Europe backlog and vice versa. It's a little hard to wait here for GC but there's always something to do here) wish you find way better for you. The only thing keep in mind this process is never quick or easier especially now.