while it lasts

The relative ease of getting him down for his afternoon nap seems to be stealing ease from the night-time bedtime. Then again, he was almost falling asleep onto his pieces of ripped-up bread and cheesecrumbs at lunchtime so was unlikely to feel like putting up much resistance, whereas for the past week of evenings he's been rattling about as if sugarcharged or caffeinated, perhaps because he knows bedtime is imminent and is trying to build up momentum to push through it.