Dating Advice

Im a single mother, I have known this guy for about a year. We recently started hanging out and it started off as fwb. He decided he wanted more then that so we are now "official" as you call in and are dating. He works ALOT, with that being said we hardly talk over the phone or text and we dont really see each other as often . When we do text its very short .I feel like he isnt really wanting this like he thought, but he says he does he is just really busy. Its actually starting to piss me off.

Am I overreacting?