I-864 joint return, no W2

[aless 0]

Apologies for asking many questions. This I-864 is confusing and I don't want to make any mistakes. I own a few properties which I rent out. That is my income. I have no W2s. My wife and I file a joint tax return and she is filing an I-864a because we are using jointly-held assets. Based on advice in forums I am entering the full amount of our current annual income in my box and entering $0 in my wife's box and on her I-864a. Is this correct? Most advice on this matter suggests using W2s to differentiate each person's share of the income on an I-864, but I do not have W2s. Should I just explain in the cover letter that I've attributed all the income to myself and have simply included my wife because we file a joint return and hold bank accounts jointly that I am using as assets? But on her I-864a for Total Income for the three years I'll enter the same amount as I enter on my I-864. Or am I doing something completely wrong?