Flutter iOS App Size issue Runner app size is 450MB Can anyone help how can this be reduced

Question

I have tried almost all the solutions available online. People has suggested to change flutter version to stable, clean the target etc.. but I am not able to reduce the Runner.app size so far with any of these solutions.

Note - In "Runner.app/Frameworks/Flutter.framework" folder there is one file named "Flutter" which is occupying 383MB of space.

Can anyone help me knowing how this can be reduced?

Diawi is not allowing me to upload that big file in order to get it installed using bar code & link.

Thanks in advance