Unity 2D gravity

in my game i have a plane that flies across the screen and drops a care package, i have been trying to get the sprite to fall slowly by changing the gravity scale on the prefab to 0.1 and have even tried changing the value for gravity in the projects physics 2d settings. I have done all this and the item still falls at the same fast speed. Im currently not using any script on the prefab, im simply instantiating in and letting gravity move it down.

Can anyone help me ? I want it to fall slowly, almost like a leaf.