If you met a sexy pregnant single mother who was willing to do onlyfans/adult modeling (no sex), wanted to make as much money as possible and you were a preggo-lover who she asked for advice, what would you do?  
P.S. Preferably without telling her you low-key like pregnant chicks

Just like any woman who considers doing content like OnlyFans, I’d say do it only if she’s comfortable with potentially being nude on the internet. If she’s into it, then that’s great for any potential content. If she’s not into it and she still makes an account, then the price and quality might not be very good. In the end it’s entirely her call

I would tell her if she wants advice she should talk to a girl who has done OnlyFans.

I'd support her decision and advise her of the unfortunate risks surrounding sex work at this time.

Thank you for the answers so far my dudes!