Making A Multi Mob Mob

Currently I'm trying to code a centipede mob and I'm trying to make it act like the Naga(Twilight Forest) or Snake(The Game) where each segment of the body follows behind the first one. The problem is I can only get it to teleport on its parent. I'm using a plugin called Additions (Link: Mod), This allows me to get and set the parent entity. I mainly just need a way to figure out if the parent entity moves then it should move to its past position. I have been working on this for a little while. I just want to know if anybody could help me.