Getting mortgages with low employer income shown

[Marco Acampora]

I've been a server at a high end restaurant clearing $55,000+ every year, but only showing $15,000 on paper. I currently have 3 single family homes mortgaged with the bank, and no longer can keep building my real estate portfolio due to very low employer income, so it looks like i cannot support another mortgage. any way around this to keep building? is private lender at high interest rate the only way? HELP please