How to make spawn Niagara Particle slowly attract towards Skeletal Mesh?

Hello community! I have created a Niagara particle system, in which the particle will spawn on a skeletal mesh by using the Update Mesh Reproduction Sprite in Particle Update.

There is an effect I try to achieve: Make the particles detached from the skeletal mesh by turning off the Update Mesh Reproduction Sprite. After that, make the particles attach back to the skeletal mesh.

I successfully detach the particle from the skeletal mesh, but when I try to enable the Update Mesh Reproduction Sprite, the particle will snap back to the skeletal mesh. How could I make it look like it’s forming or slowly moving towards the skeletal mesh, like the skeletal mesh is attracting the particles?

When the particles are attached:

When the particles are detached: