Baby sleeping longer at night

The last week or so our 6 week old has been sleeping longer stretches at night, which is great! But for whatever reason this has made me more anxious/I feel like I’m getting less sleep. I’m not overly anxious, but I do wake up many times checking on baby, worrying about how long it’s been since he last ate. Since he sleeps in our room I find myself waking up to all his little noises and wondering if it means he’s about to wake up, even when he’s still sleeping pretty soundly.

Any advice? Also, how long does your baby go at night without eating? Is there ever a point where it’s too long and you’d wake them up to eat?