Joe Simpson, the father of Jessica and Ashlee Simpson, has been diagnosed with prostate cancer and is in recovery, his rep confirms to PEOPLE exclusively.
Simpson was initially diagnosed two months ago, and subsequently had prostate surgery. Doctors have said that the operation went well, and Simpson is already back at work and eating healthier.
Now working as a photographer, Simpson is currently heading to Japan to shoot the cover of Nation-Alist magazine and work on several other campaigns.
“He’s feeling great now and is optimistic,” a source close to Simpson tells PEOPLE. “He’s felt so much love and support from his family and friends.”
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Simpson’s family has been supportive of the 58-year-old — especially in his new endeavor.
Both of Simpson’s famous daughters attended the opening of Dream Works, his first-ever photography gallery exhibit, in Los Angeles earlier this year.
Of photography, Simpson told PEOPLE at the time, “There is something about taking pictures that makes me happy, and it has always been a hobby for me.”