The father of Jamie Lynn Spears's daughter turns 20 after being released from the ICU
Casey Aldridge has been released from intensive care and is walking around for the first time since suffering a head injury in a car accident on Sunday.
“He came out of ICU,” a source tells PEOPLE, adding that doctors are hopeful they’ll soon be able to discharge Aldridge – the father of Jamie Lynn Spears‘s 10-month-old daughter Maddie – from the University of Mississippi Medical Center in Jackson, Miss.
Aldridge, who turned 20 on Wednesday, was up “walking around twice [on Tuesday],” says a source close to the family. “He was a little wobbly because that’s the first time he’s been up since the wreck.”
As for how Spears has been handling the incident, a friend tells PEOPLE she’s holding up well. “I’ve been very proud of her,” says the source. “I’m really impressed.”
Aldridge was hospitalized after flipping his F-250 pickup truck on the driver s side on a two-lane road in Louisiana at about 1:30 a.m. Sunday.
The accident – during which three of the five occupants, including Aldridge, were ejected from the truck – occurred after a bachelor party for Aldridge’s cousin at nearby Lake Bruin on Saturday, according to a source. The two other passengers thrown from the truck suffered less serious injuries.
• With reporting by RUTH LANEY