How long does your one month old sleep

B17
The past 2 nights my 1 month old son has been sleeping good through out the night..id say hes been sleeeping for 6 hours straight now... Is this normal? And he hasnt eaten for about 7 hours now.... Normal? *i alternate breast each feeding so will this hurt my supply* ? I woke up twice throughout the night having to hand express because one side is super engorged.