Dimon is expected to host the company's third quarter earnings call next month, when he also plans to resume international travel and client meetings, the Journal said.
"I took naps when I had to, went home early, and there were days when I was in treatment all day long," Dimon told the Journal in his first interview since his diagnosis became public.
Read MoreJPMorgan CEO Dimon 'feeling fine' amid treatments
He said he followed the advice he gives family, friends and employees to "take care of your health first."
At an investor conference this week, the Chief Financial Officer Marianne Lake said Dimon was "feeling fine" with his treatment for throat cancer and was continuing to be involved with the business.
JPMorgan, the biggest U.S. bank by assets said in July that Dimon, 58, was diagnosed with throat cancer but that the ailment was curable.