I did some part time as a contractor. The client reported wrong the 1099 misc and he doesn’t want to fix it. He reported $17000 as 2018 compensation but in that $17000 amount there was $6500 that was paid, and cashed by me in december 2017 for work done in December 2017. I reported that income in 2017 taxes. How can I report in turbotax that discrepancy in 2018 since the 1099 misc is reported as $17000 instead of the correct value of $10500.