Cooking only UMG

I’am making a visual novel choose your won adventure style game. Basicly using only UMG Widgets and a GameMode blueprint to store all the variables I need to access in the game. All the Image and video assets I use currently add up to around 150 MB. And the cooked game is around 550-600 MB. If I understood the output port correctly I am cooking a whole bunch of unnecessary assets used for 3D, AI, Lighting and so on. Is there any way to cook only UMG related files?