In addition, I found this quote from the George Lucas' novelization (which, I understand, was ghost written by Alan Dean Foster, based on George's script):
Luke infers that he'll only be on the ship a few hours. 3 hours?
More evidence that the trip is 3 hours or less and not days.
Luke arched his back, and the pose was so strange Han couldn’t keep his chuckle in. The kid must have heard it because he scowled and switched the lightsaber off. “Oh, this is pointless. What can I really learn on a ship in a few hours?”
Exactly. Han dropped his mask back down over his face and returned to the circuitry in front of him.
“I do not expect you to master everything in mere minutes, and you should not expect that of yourself, either. That is a path to frustration, anger—and both are dangerous.”
Luke infers that he'll only be on the ship a few hours. 3 hours?
More evidence that the trip is 3 hours or less and not days.