The exes reunited for a faux-snow day at Axl's pre-school, called Crestwood, in Los Angeles on Saturday, Feb. 23.
They couldn't have gotten along better, spotted hugging, playing with their little one and even going for a ride down an icy hill by sled together.
Josh was also super hands-on at the school's family-fun event. He helped to set up and get all of the fake snow laid out for the kiddos earlier in the day.
"SNOW DAY 2019!!!" he captioned a video of the preparations on Instagram.
"With absolute love and respect, we decided to separate as a couple earlier this year," the pair said in a joint statement. "To give our family the best opportunity to adjust, we wanted to keep this a private matter before sharing it with the public. We are and will always be united in our support of each other and our family."
Josh was most recently linked to "Baby Driver" actress Eiza Gonzalez, but ended things last summer.