How do I make an object grow shorter over time?

I have a catcher object that catches things falling from the sky. I want the object to grow smaller over time. The catcher object is a sprite, not just a simple shape, so I couldn't find a simple way to do it. I wanted it to be kind of like flappy bird, where the pipes get longer but it stays the same image. Is there anyway to do this?

You should be able to scale the object over time, so every x seconds, scale down the size of the object

every-x-second/set sprite.width-5