Busy weekend for some?

Are we nearing the end-game?  The Guardian reports:

Theresa May’s fractious cabinet ministers are warning Downing Street not to skirt controversial issues, including freedom of movement and services, off the table at Friday’s Chequers meeting.

...

At the day-long meeting, May hopes to unite her cabinet around a plan which can then be published in a formal white paper next week.

Not clear to me how a formal white paper (which is supposed to be a considered statement of government policy) can be written, cleared, printed and published in a matter of three or four days, not least because, on this subject, every word will need to be crawled over at length.

(But maybe the white paper is already written and the Chequers meeting is just for show?)