Guy problems

I'm seeing this guy and he was super clingy at first and we spent a lot of time together and things have changed. We were gonna make it official on new years but we ended up calling it off because he said he wasn't sure if he wanted to be in a relationship and didn't want to be in one with me if he wasn't ready. it seemed like we were already in one. We barely see each other anymore and I'm worried to bring it up because I don't wanna push it when he just wants to take it slow but we used to do everything together but now we don't do anything together. It's stressing me out because I don't wanna ruin this.