After building a stake in Twitter at the start of 2022, Mr Musk made a takeover offer. But Twitter later sued him after he tried to back out of the deal.
Things are going "reasonably well", Mr Musk told the BBC, stating that usage of the site is up and "the site works".
The workload means that "I sometimes sleep in the office", he said, adding that he has a spot on a couch in a library "that nobody goes to".
And he also addressed his sometimes controversial tweets saying: "Have I shot myself in the foot with tweets multiple times? Yes."
"I think I should not tweet after 3am," he added.