How to reduce package size

I’m making a product configurator studio with Main menu and few submenus and variant manager, my lights and meshes are movable, the project is not that big but even thoguh my package size for windows and android are too big!!

I followed the instruction in UE4 documentation on Reducing Packaged Game Size but with that I still have the sizes as following:

  • windows package size: 455 mgb ( the complete windows no editor folder )
  • Android package size : 202 mgb ( the apk file as I packed everthing to apk )

Are these sizes normal? if not, is there any way I can reduce it more? or configure my project in a better way to reduce the final size?

Thank you in advance