Disclaimer: This site is moderated by the Formidable Forms community. Formidable Forms and its parent company Strategy11 are not responsible for the words, opinions, and content posted by others on this site. This site is provided as a courtesy and free resource for the Formidable Forms Community. Any actions deemed as harassment, toxic or abusive, will result on being banned from this site and potentially losing your Formidable Forms license.
Thanks for your cooperation, if you have any questions please
consult our code of conduct
This gets a bit deep, but you'll probably want to use a combination of https://www.fdmdigital.co.uk/formidable-form-timer/ and https://www.educba.com/jquery-read-only/?source=leftnav. You'll need to get a time up on the form, auto start it, then have a function for after a period of time make all fields read-only and/or redirect as you wish.