Some state should write a simple 4-line text to pass as a bill, and just say non-federal property of DC returns to either Maryland, or if the residents voted for Virginia...let them have that state. Then snowball the effect across the rest of the states.
I wouldn’t even see a problem taking the non-federal property and giving it over to California...making it a county.
The big problem with DC Statehood is that it give a single State the power to legislate over the remaining 50 States. Hell if that’s what the left wants, let just move that power to Rhode Island and give DC back to the State of Virginia and call it even.