He's 19 months. They do seem to grow up overnight sometimes don't they? We have just come through a strange period of a big jump in A times, followed by sickness and then back to the big jump in A times, followed by the recent turn of back to normal A times. You're right....the tweaking never stops.
Right now it's bath, diaper/pajamas, sippy cup milk/snack, teeth, sippy cup with water if he wants it, sitting reading some books, a quick night night to things then into the bedroom for a couple of books, a song if he wants it and into bed. Hmmmm, that sounds like a lot but he is so relaxed in the bath and absolutely loves it. The reading books in the living room is really so we can watch signs to see if he's tired.
We're still in the room until he falls asleep, we lie on the floor and don't say anything or put a hand on him unless he's really upset. Our Gentle Withdrawal plan always seems to be hampered by teeth, a change in activity times or getting sick. Also, we're so relieved and happy when we're in a good sleep groove that I think we sometimes forget that we should be working on that!