Attempting to roll over

Kaden has been trying so hard to roll over the past few days. He'll get so close, but his arm gets in the way. He hasn't been quite strong enough to get all the way over. This morning he laid on his play mat for 20-30 min. The whole time he was trying to roll over. I caught a few minutes on video. He's so cute to watch. I'm sure he'll get it in the next couple of weeks.