Very curious about this as well. I've seen articles[1] that suggest that you canis engage in passive work, which includes activities such as:

- Conducting market research and customer discovery

- Discussing planned investments and purchases with prospective co-founders

- Attending and participating in business meetings

- Developing business relationships, such as meeting with investors and clients

- Negotiating contracts

- Incorporating a US company, applying for an EIN, establishing a mailing address, and applying for a business license

- Act as a passive shareholder or investor

However, my attempt to find the specific regulations or uscis policy memorandums that state these failed so I'm unsure.

[1] https://www.deel.com/blog/starting-your-own-business-h1b-vis...