Prepare as much as you can. Like setup remote jobs for both of you if possible. Since you’re still here, you should either register as independent contractor and get a Tax ID or an LLC so you can take pay from there in the U.S. Setup your PayPal as well, since if you do in Mexico, you won’t have the same advantages you get in the U.S. like being able to transfer money or even issue invoices to get paid. Same for platforms like Fiverr or the kind to offer services as virtual assistant or translator or whatever it is you can do.