Jason Aldean tells PEOPLE mag he and wife Brittany Kerr Aldean‘s second pregnancy was planned.
The couple welcomed 7-month-old son Memphis on Dec. 1, and the country megastar is also dad to two daughters from a previous marriage.
Aldean explains, “After having our son, we knew we wanted to have two kids. I have my two older daughters already, so after Memphis was born we knew we wanted to have another one pretty quick — to go ahead and knock it out and have one that was a little closer in age to him.”
“I would much rather knock it out now while we’re used to having one in diapers and formula and all of that,” he adds. “I think it’s tougher when you get out of that and wait a couple years and then have to go redo it all. … We just wanted them to be close in age, and we figured we’re already in that mindset now, so why not?”
Aldean reveals he and Kerr Aldean, 31, underwent in vitro fertilization once again for their second child.
“We did IVF with our son, so we had to do that again with this one,” adding of the baby’s sex (which they are keeping a secret for now), “We knew what was going on.”