“Chelsie is like a drill sergeant,” says Ty, who adds he is hoping to not to mess up this week.

Ty, a rodeo athlete famous for riding bulls, also tells ET that he has had to get his pants re-fitted for this week’s performance, since he has lost so much weight on the “Dancing with the Stars” diet: long hours of strenuous rehearsal.

And even though she had to hang up her dancing shoes as a result of a fractured tibia in both legs, his wife Jewel is being supportive.