Front end publication

Hello,
When I submit an event from the front-end, I can enter a lot of data in the form, then I can preview the event. If I want to edit this preview, I’m redirected to the first form, however I lost a lot of the data I already have completed.
Is there a way to don’t lose data ? if no, then is there a way to disable the preview of the event and automatically publish it ?
Thank you in advance for your answer,
Regards,
Jeanne