Unless a baby is already up on their birth weight they have to be woken for feeds, 3hrs is about average.
My kid would feed every 3hours, 4 now and then. Would rarely exceed 3½hrs between tbh BUT my kid never lost weight, only gained from birth, they gained like me in a buffet for the evening
![Face with tears of joy :joy: 😂](https://cdn.jsdelivr.net/gh/joypixels/emoji-assets@5.0/png/64/1f602.png)
We established on demand feeding fairly early due to they didn't lose weight and waking to feed was too much in too short space. So we let them sleep until they woke up hungry(HV approved)
But yeah, 3hrs between feeds at a week old odd isn't too bad. They just can't do on demand until that baby has gained a good amount.