Slept 8 hours!!!!!! 😶👶

My 1 month old slept 8 hours & then only woke up for feeding ..

He ( from birth - born at 40 weeks) did 2/3 hour stretches of sleep then want feeding

This changed to 4/ 5 hours

Now.. last night he did 8 hours

We feed on demand

I'm just worried he didnt wake up for feed or we didnt hear him???????

I mean 8 hours....

Thoughts?