8 week old sleep

My little guy is 8 weeks Saturday and had been a pretty good sleeper, goes 5-7 hour stretches on his longest stretch in the night, has gone almost 8 hours but tonight he’s pushing 9 hours now! He’s perfectly happy, healthy, gaining weight really well, and was ravenous yesterday so maybe a growth spurt? I was looking it up to see if it was normal, anyone have this happen with their 8 week old? My first woke up at LEAST once and usually twice for the first year and still often wakes up once at almost 3 lol. Never in my wildest dreams could have imagined looking up how long is too long for a baby to sleep lol! He was grunting at 230 am, about 4.5 hours into his stretch and I picked him up to nurse him and he just went right back to sleep.