Learning to stop myself when I know the next dialog sequence between the characters. That allows me 24 hours to play with the beginning of the next section. Thus: I saw the first ten lines between Logres and Libby yesterday. I know what they talk about when the cross the Channel tonight. As to what happens next, I’ll know before I sit back down to write in 23 hours.
Sneaky, old, clever, and lazy works for me.