I own a few single family homes and have always communicated via texts, emails.  

However, the method of handling the 1099 income on the tax return may vary depending on the circumstances and interpretation of tax laws.The approach your CPA has taken, where each property is reported separately on Schedule E and then adjusted on a statement for property 3 to match the total 1099 income, could be viewed as a cautious approach to ensure compliance with IRS reporting requirements.

These “mentors” suggest methods that are DANGEROUS in the hands of the inexperienced, unknowledgeable, and under capitalized.  

Or is there some other method that works better.

Context: My spouse is a real estate professional by materially participating in the management of multiple Single family Residential.She spends more than 750hr and keep a methodical record oh the activities.

Agents favor companies that handle property upkeep well, screen tenants effectively, collect payments on time, and communicate promptly.

Either you use a mileage allowance of 67 cents per mile or you use a more complex method called actual expenses.

These include market analysis, property selection, guest communication, listing creation and optimization, and more.

Already initiated initial communication with some of the investor friendly agents.

They may not be able sell their home using traditional on market methods, or even afford to pay off their loan.