DS started sleeping 6-7 hour stretches at 6 weeks. He "regressed" a few times along the way, but there have only been a few nights in his life where he was up every 2-3 hours. For a long time he had one waking at 2-3 am to nurse (after going down between 8-9) and then he'd wake again at 7-8. He dropped the middle of the night feeding around a month ago (he's 8.5 months). Now he's down between 8-8:30 and up between 6-7. I was worried about my supply but my body adapted really well, and my cycle still hasn't returned.
He's my first, and he's remarkably easygoing, so I feel like we're in for it if we have a second.

He also has always been big - above the 95th percentiles for weight and height since month one. Some people seem to think that makes a difference in sleeping. Naps, on the other hand...