Sleeping through the night ?

Skyla

My newborn is only 2 month and he recently started sleeping till atleast 3-4am then wakes up then goes back down for about 3 Maybe 4 hours what does sleeping through the night classify as I’m confused and when do they start not waking up in the early hours like 1-2am I’m only 21 and this is my first child would love some insight to how most baby’s sleeping patterns go