Former President Donald Trump has skipped some recent interviews with CNBC, NBC, and the Shade Room, a black-owned media outlet that could be critical to his effort to sway voters of color.

In the middle of a frenzied dash to the finish line 18 days away, Trump is seizing almost every opportunity he has to make his case to voters. But the handful of times he’s pumped the brakes on appearances has been attributed to the 78-year-old candidate being “exhausted,” according to Politico.