is there a way for an end user to save a form mid sumbission to comeback to it?

Hi,

Yes, we have two methods to achieve that.

1. Using browser's local storage to save the form data. Guide: http://www.jotform.com/help/227-How-to-Enable-Auto-Fill-Feature-Save-Form-Entries-to-Continue-Later

2. Using session method. http://www.jotform.com/features/save-and-continue/

If you need any further assistance about this, let us know.

Thanks