Let him sleep he'll wake when he's hungry! Take it as a blessing it makes things so much easier when you get a decent nights sleep. I've let my baby sleep through from around 5 weeks, he's 11 weeks now and sleeps from around 11.30pm till 8.30am then has a bottle and sleeps again till around 11am. xx
Max slept through from 8weeks & he would wake up very hungry but there's no way I'm waking him if he's sleeping! lol They'll soon waken when their hungry.