In his World Championships debut in 2019, Dahiya defeated the European champion Arsen Harutyunyan in the round of 16, and the 2017 world champion Yuki Takahashi in the quarterfinal, to earn one of the six available quota places for the 2020 Summer Olympics. He settled for bronze after losing to defending champion and eventual gold medalist Zaur Uguev in the semifinal round. On the back of his medal win, Dahiya was included in the Ministry of Youth Affairs and Sports' Target Olympic Podium Scheme (TOPS) in October 2019.