Overlapping 1099K and 1099NEC income

I'm a contractor employee (high school soccer referee). Some schools pay through our assigning web page's payment section and some pay directly, with check. I get a 1099K from the assigning webpage and 1099NEC from school districts that paid more than $600, for the year. Some of the schools that issue 1099NEC pay through the assigning webpage. That income is reported on both the 1099K and the 1099NEC. How do I enter the overlapping information so I am not reporting the income twice?