"Rob wants to be around as long as possible for his daughter, Dream, and in doing so, knew he needed to take control of his health," the source said. "Rob has lost some weight, but has a long way to go."
As for his relationship with 31-year-old Chyna, the source said the two were working it out.
"Rob and Chyna co-parent and are in a good place, but don't communicate much," the source shared. "They want what is best for Dream and that starts with not having any drama."