Three nights in a row little man has woke up at 5am for a feed & then gone back to sleep. Not used…

Three nights in a row little man has woke up at 5am for a feed & then gone back to sleep. Not used to this one bit! From 5weeks old he's always slept all night unless he's been poorly. Good job he's sleeping out tonight :). I'm not getting up till dinner time tomorrow lol. Anyone else experienced this with an 8month old?