Garrett handed over controls to his side's offense to coordinator Bill Callahan during games at the start of the season and the Cowboys are currently ranked second in scoring in the NFL this year.
"I think it's been a good thing," Garrett told the Fort Worth Star-Telegram. "It's something that we've tried to do since I became the head coach, coming from the coordinator position.
"They're only so many hours in the day, so since I became the head coach, I was always trying to delegate some of the responsibilities I had within the coordinator position and within some of the head coaching responsibilities that I had. So now I can be more focused on some of the head coaching stuff."
The Cowboys are 5-4 in their season after week nine.