I haven't said anything before this, not wanting to jinx it, but Jet's slept through the night, without getting up for three nights in a row!! Just suddenly, boom, he could sleep through the night!
I am amazed, grateful, and, finally, not painful with milk in the morning. Hoorah!
So the Sears book was right. Just provide parenting until they figure it out for themselves, and they will. Wow.