Looking to buy my second house hack

[Lorenzo Dudley]

I am a newbie real estate investor in the Utah. I bought a single family home with and ADU basement about a year again my wife and I live in the basement and rent the upstairs and we are currently living mortgage free. My question is we want to purchase a 4plex with in the next year or so but I am afraid our debt to income isn't going to be enough for a second home. What action do I need to take to prove that my house is being paid by tenants? Is two years of payment enough?