Scale down slime jiggle?

So i am trying to make a little slime food like jello, and I found a tutorial on how to make bouncing slime liked here Roblox Slime Mob Tutorial - YouTube

So I created it, but I have 0 idea on how to scale it down and make it still work, let alone work with tools, any help?

Depending on if it has a humanoid thingy in it you could change the jump hight, I assume thats how high it jumps, as for any rigging breaking by scaleing it down all you have to do it rerig it and any animations should still work, may need some slight adjustment