Mixamo/Blender/Ue5 Character Workflow

I’ve taken a Mixamo character I like (just fbx no Animation) and downloaded from Mixamo to Blender, where I changed a few of the materials. I want to now use this new character in Ue5. So I export the new fbx character from Blender into Unreal, where I get skeleton mesh for the character. How do I retarget this new Character in Ue5 so I can add animations to it. There are loads of videos on how to add Mixamo animations to Ue5 characters, but I want to do opposite, add ue5 animations to Mixamo Character, please can someone help, thanks.