From IRS page: https://www.irs.gov/faqs/small-business-self-empl[product key removed]ess/schedule-c-schedule-se/sch...
"If your sole proprietorship business has no profit or loss during the full year, it's not necessary to file a Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship) for that year."
I think I've slowly answered my own question. Since the business had no profit or loss, just don't do a Schedule C, for 2024 – or ever. But I'd very much like to hear from others.
