Adding a new mesh to a prefab from it's blend file

So i'm trying to make a game where i can change my character's clothes, to make the clothes i select a bunch of vertices from my character's body in blender which is already rigged, then i duplicate those vertices and make them a separated object, then i modify that object to make the new piece of cloth.

Since my character is already a prefab in unity if i make a new piece of clothing it doesn't add to the existing prefab, then i would need to make a new prefab from the new blend file that has the new piece of clothing, which takes a lot of time because i need to add the scripts and set their values again.

So i would like to know if there's a way to add new meshes to a blend file that is already a prefab in unity so that the prefab includes that new mesh. Thanks in advance!