Rental income accounting

I am entering bills and income manually into quicken. I have a property manager who sends me one rental income check for all the apartments every month that gets recorded as income. I do not record the individual checks that are received by my property manager for each apartment. I would like to keep track of the yearly income for each apartment separately. Is there a way to enter the income from the apartments without the entries doubling the income totals as I would be entering the monthly check from management as well.