I also helped my mother get 2 rentals to help supplement her retirement, mistake #1b.

Being a nutrition and fitness coach, your point below is the largest component that I have seen. 

Your only option will be to find a job to supplement your diminishing ability to sustain your standard of living.The income must last throughout your lifetime.

It's an estimated cash on cash return given current rental rates subtract expenses assuming 7% interest rate, 10% management fee, 5% repairs, 5% capex and other expenses like mortgage, insurance, tax. it's a estimate to tell you what properties to analyze vs ignoreyou can see the are pockets of negative returns as well as pockets of positive return. this is to supplement the data @Devin Conley provided

Unless there is a history of STRs in the property already and you have experience with STR, you really wouldn't be able to supplement your income with that. 

It's not quite as easy as renting out two sides of a duplex, but with the right marketing and management you could rent out the extra unit to supplement the mortgage payment. 

If you just want to make some quick cash so you can supplement your retirement, then sell it and relax.

Is the option government supplied insurance where taxes supplement the insurance?  

This dealflow is then supplemented with deals from the broker channel.The broker channel will get leads in the door quickly, but they are usually of questionable quality and loyalty.

SMS can supplement this strategy but shouldn't be relied on as a long-term strategy.