Rob Kardashian reportedly headed to fat camp on Monday, months after gaining over 40 pounds. The reality star has been on a mission to lose weight after getting chubby after his relationship with singer Rita Ora ended last year.

At his 26th-birthday party in March, Kardashian told Us Weekly that he was slowly losing the weight. “I lost five to seven pounds last week. I’m trying to lose 40. It’s a little journey, but it’s good.”

He frequently exercised with rapper the Game and was photographed by the paparazzi on hikes.

However, he has not lost a significant amount of weight, and it seems his mother, Kris Jenner, is keen on getting him back in shape as soon as possible. She was photographed getting on a jet at Van Nuys airport in California, and a source close to their E! show told X17 photographers Kris was taking Rob to a weight- loss program. He was allegedly on the plane already.

On the mid-season finale of "Keeping Up With The Kardashians," earlier this month, fans saw Rob break down after opening up about his battle with the bulge. The episode revealed that Rob’s health has been declining since gaining a significant amount of weight.

“If he doesn’t change his lifestyle right away, he’s going to end up diabetic and his organs are going to shut down,” Kris told daughter Kim, in response to his blood tests results.

Kris later sat down with her son, and told him the news. “I don’t wanna see something horrible happen to you [sic]. Your liver is supposed to be between 0 and 44. It’s 217. Your liver is shutting down.”

Later in the episode, Rob expresses his insecurities, telling Kim, “I don’t really wanna film with my shirt off. … I'm sad. I don’t’ even wanna sit down because of how fat I am [sic]. I don’t know I just don’t know what to do.”