Problem with evidence to upload a film

Hi IMDb team, I tried to add my new film to your database and provided an explanation for why I couldn't attach the required evidence but my film submission was rejected. I have seen the advice page about adding a new title and it mentions the accepted evidence but we are only independent filmmakers, so don't have an online TV schedule or news article about the project. As we are in the pre-production stages of the project we don't have any production stills or a trailer yet. What should I do? Thanks Nicole