COURTENEY COX ARQUETTE is waiting patiently to become a mother again - because she wants her daughter to be old enough to help with the chores. The 42-year-old former FRIENDS star struggled to conceive baby COCO, now two, after years of pregnancy complications, and now she's keen to have one more child with husband David Arquette. But Cox Arquette doesn't want to rush conception because she's keen for her daughter to be old enough to help with diaper changing and other motherly chores. She says, "We're not trying yet (but) we're revving up the engines. "I want Coco to be helping me with the next one (baby). One child is hard. Two is probably harder."