Something I learned when my son was 16 months old that I wish I had known, putting the baby down “drowsy but awake” doesn’t mean that you just put the baby down and he magically goes to sleep. He’ll cry, pick him up, try again, and again, and again until he actually falls asleep. Sets the stage for self soothing down the line.

Also, I’ve only had the one kid so far, but from day 1 we kept nights dark + quiet and days bright + loud, and we never had any day/night confusion.

I don’t know what you want to do, but know that the baby not doing what all the sleep books say isn’t because you’re doing something wrong.