In GA4, if all the form steps are on the same page, you’ll need to send each form interaction as an event to Google Analytics. That way, you can track the progress of users through the form. Each text box or form step can be tracked as a unique event. For instance, you might send an event when a user starts the form, another for each section they complete, and another when they finish. Once these custom events are set up properly in GA4, you should be able to build a funnel with them. You might need to involve a developer to set up these custom events, or use a tool like Google Tag Manager if you’re comfortable. Note that the events need to be set up prior to the user interaction you wish to track, as GA doesn’t retrieve data retroactively.