Dels posted...
I hope wrong answers are allowed because apparently the film is called "Finding Nemo" but "Little Nemo" was just the first thing that popped into my head when reading the topic title!
That's an actual thing though.
https://en.wikipedia.org/wiki/Little_Nemo
Even has an NES game.
https://gamefaqs.gamespot.com/nes/587417-little-nemo-the-dream-master
Apparently there was even a Netflix movie adaptation loosely based on it.
https://en.wikipedia.org/wiki/Slumberland_(film)
But like most Netflix adaptations it wasn't well received.