Breaking Celebrity News has exclusively learned Rob Kardashian's loved ones are concerned about his bizarre behavior and reclusiveness in recent months.

“For a while, Rob was in a good place and had been planning his comeback,” a source explained. “It was a big relief for his family and he finally seemed to be on the right track.”

Rob, 32, had plans to feature prominently on this season of Keeping Up with the Kardashians and “get back out there,” continued the source, who added: “But he backed out and is spending all of his time hiding at his place or Khloe’s house instead.”

As Breaking Celebrity News previously reported, Rob has also refused to star on Scott Disick’s new show, Flip It Like Disick. And the youngest Kardashian sibling raised eyebrows when he didn’t want to evacuate when fire threatened his home, where he was planning a birthday party for his 2-year-old daughter Dream.

Now, said the source, “He’s totally gone back into his shell again and refused to even spend Easter with his family.”