The reason why it wouldn't go far is it'd be said to have to last 2 minutes or more.
But that'd reach over 400 frames. (Sure it's easy to reach that much in pivot in only half a day, But drawing won't be able to be done in half a day.)
First of all forget pivot.
second of all forget days.
Movies do not take half a day to make.
They can take months, years.
I can direct/edit if you would like, but this movie even if I don't work on this would likely last for 2 weeks min.