I'm dating a guy who's super busy...

He works an internship, a part time job, and does school. I notice that I am usually doing most of the initiating for texts which is fine, knowing that he's so busy and may not have the capacity to text. When I do, he's always so quick to text back and he's really sweet. But wondering if it's unusual if he never really initiates?

We've talked and we are exclusively seeing each other. Said that we'll be naturally taking it slow because of how busy we are. Just wondering if i should be worried or back off on initiating for a while