At 7 weeks old, our little man slept through the night for the first time. He slept 8 hours straight. Before then he was sleeping 4-5 hours at a time. I was so excited to get a full nights sleep.
From 8 weeks onwards, he started sleeping through the night consistently. He was averaging 7-9 hours straight and then would usually go down for another sleep straight after.
By 10 weeks old, he was sleeping 10 hours straight. Every 10 nights or so he will wake up in the middle of the night. I think this is to keep my milk supply up.
Of course he cluster feeds all night before his big sleep, but this is something I am definitely happy to live with in order to get a long interrupted sleep. đ