Rotating the rest of the body around the wrong limb

I really have no experience with animating so I’m a bit troubled by this. How do I make the torso rotate around the head rather than the other way around?

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I’ve got the joints all connected from the head to the rest of the body except from the HRP to the head.

Finally found the solution: I made the HumanoidRootPart an exact copy of the body of the spider and then joined the body to the HumanoidRootPart and the head to the body.