Still not walking on own

My little guy just turned one a couple of weeks ago but he’s still not walking on his own. He’s in daycare and is the only one not walking in his age group. I know it’s not something to worry about for a few more months but I can’t help wondering what’s taking him so long?! He just doesn’t seem interested in it at all. When we try to get him to take a few steps he’ll just sit down. He can stand on his own and walk easily with anything that will move.