The Soft Body sim was done after the animation is finalised and exporting the geometry out as an alembic cache. I brought it inside Houdini and use vellum (cloth) to simulate the creature to achieve the jiggly/squishy effect. To prevent the entire creature from collapsing, I added a paint node to only paint out which areas I wanted it to be more jiggly and then blendshape it to the original animation on frames that may look broken in the sim.