Submit all forms button

I am currently designing a site that has a sequence of forms that the user moves through that has custom functionality to save to their account or submit on each form.
On submit, or save, it redirects the user to the next form in the sequence. At the end of the sequence, I would like to create a button that triggers Submit on all of the forms.
This prevents the user from having to backtrack and click submit on each form they’ve already saved.
Any help is appreciated! Thank you.

An interesting approach. I wonder if the partial entries add-on would help you?
On submission of the final form in the sequence - a use of gform_after_submission to find all partial entries on the “other” forms and use the GFAPI to update them to full entries.