By Alicia Brunker
Jun 09, 2018 @ 11:30 am

As the entire British monarchy stood on the balcony of Buckingham Palace on Saturday to celebrate the Queen's birthday parade, one tiny member was noticeably missing from the festivities. 

In addition to Prince Philip, who retired from his royal duties in August, Prince Louis's absence was felt from the annual Trooping the Colour tradition, where older siblings George and Charlotte had a blast watching the military airshow.

Mom and dad, Kate Middleton and Prince William, left the newborn at home with the nanny, as he's simply too young to participate. At just six weeks old, Little Louis also had to miss out on Uncle Harry's wedding to Meghan Markle last month. 

Chris Jackson/Getty Images

According to Dr. Robin Jacobson, a pediatrician at NYU Langone Pediatric Associates, who spoke to Town & Country, it's preferable for infants to stay home for the first two months after they're born. "In truth a newborn baby could go on a plane or be out in public even the day after they’re born. We prefer though, that they not for the first two months because the worry is they’re going to get sick," she told the magazine. 

She continued: "I tell my new moms and dads, a week after a new baby is born, if you want to go for a walk, if you’re not anywhere too crowded, it’s fine, but you really don’t want to be in big crowds until they’re two months old."

With the two-month mark coming up very soon, it's likely royal fans will see Louis again at his upcoming christening that is rumored to take place in July—and we're counting down the days!