Baby not sleeping through the night

Needed help. I discharged from hospital this Friday. And my NB cried waking up for milk at 2am, we did all ways to let him sleep to no avail. 5plus then he willingly to sleep mode. During day time no problem, cried for milk, we fed and he the next session. My husband having dark circles and worried that will disturb our neighbours. #pleasehelp #newborn