President Joe Biden canceled nearly a dozen trips that he had planned over the next couple of weeks after he announced over the weekend that he was ending his presidential campaign.

A White House source told the New York Post that Biden canceled trips that he had planned to take to California, Colorado, and Texas.

“They started canceling stuff when he announced he wasn’t seeking reelection,” the source said, noting that some of the events were official White House events and not just campaign events.

Biden, who is just getting over a bout with COVID, dropped out of the race on Sunday and endorsed Vice President Kamala Harris for president.

The 81-year-old was supposed to leave his home in Delaware on Monday, but extended his stay despite calling into Harris’ campaign and saying that he was fine and was planning on hitting the campaign trail for her.

“I’m not going anywhere, I’m gonna be campaign with her, with Kamala,” he said. “I’m going to be working like hell, both as a sitting president getting legislation passed, as well as campaigning. And you know, we still need to save this democracy.”

Biden has faced widespread calls from Republicans to immediately resign from office since he was forced out of the presidential race due to bad poll numbers that came in response to tens of millions of Americans watching him struggle cognitively during the debate against former President Donald Trump last month.

Harris has already reportedly gathered the support of more than half the delegates she needs to win the Democrat Party’s presidential nomination after Biden’s exit.

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The findings of an Associated Press survey released on Monday showed Harris getting the support of 1,152 delegates, indicating that she is fast approaching the 1,976 needed for her to become the nominee. Another 56 delegates were listed as undecided.

Sources told Reuters that Harris aims to secure a majority of the nearly 3,900 convention delegates by Wednesday as her campaign and allies work the phones in an effort to ward off any potential challengers.

Daniel Chaitin contributed to this report.