I've talked to the Parliamentary Publications team and they've indicated to me that they would need a certain amount of time. The suggestion they had in terms of their deadline was end of day on the 13th.
I can definitely go back to see if there is some leeway, but I think that if we could keep the deadline as May 13 at 5:00 p.m. as a good working rule, it would be consistent with the technical advice I got back from the publishing team.