My neighbors' first kid had colic and they said the baby slept for at most 20 minutes at a time the first year.

So yea I imagine that'll turn you into a zombie.

They also said after a year they got a tip about a chiropractor (IIRC), went there and after 5 minutes the colic was gone. A real mix of emotions they said...

Both of my kids woke up their mom 2 to 4 times at night to feed for at least a year. One was a terrible sleeper, only 8 hours max per night, he still basically goes to sleep when the adults do and wakes up when the adults wake up. Sometimes before.

My second screamed every night for two years. It was fun.

None of your kids had colic? Every caretaker (experienced parents) that tried to releive us completely lost their mind within hours. And it never ends, for months.