It's good though because the clocks change tonight so if you do one nap and have to do a very early bedtime it won't impact on tomorrow as much (because he will be getting up an hour 'later').
OR your other option is that you give him a two nap day because he had such a short night, and then use the later wake up tomorrow to your advantage - to push his whole routine forward an hour in the hope that it continues like in the future??
So, I've not been much help!! I would always be inclined to do two naps when Ben has had a short night - but then I know they are very different.
xxx