anyone else feel like their SO is not ready?

38+6 with baby number 1 on the way & as of my pregnancy all together I feel like my SO doesn't share the same anxiousness, excitement and realization of us becoming parents at 20. He's a full time college student & works part time & has a newborn on the way. Don't know if it's the age or what but I feel as though he's still stuck in his kid ways & I feel as though I've grown up so much within these past months. He still plays video games till the wee hours of the morning & procrastinates no matter what the task. I'm just afraid he'll rely on our support system(family) to much when baby does arrive. Wouldn't want to get home to find my mother in law changing our babies diaper because he was 'busy' playing a video game. 😞 am I being to harsh? Does anyone else feel the same way?