Sources from the project said that Jenner told producers he felt too rushed and needed more time to make sure his family supported his change.
According to TMZ:
“Bruce has two big issues — he wants to make sure his 3 sons are “in a good place” to handle the radical change he’s undergoing. He realized the cart was driving the horse, and that the show cannot proceed until his kids are psychologically able to handle it.”
Filming for the project was already underway, however the show did not yet have an air date.