What do you do when you feel someone pulling away?

He’s acting distant and blames it on being busy. He also said he’s having trouble balancing things. The change also happened after we finally slept together. I’m an overthinker and it’s driving me crazy. Should I communicate with him? I’m scared of making things worse..or annoying him.

I thought about telling him “it feels like you’re falling back but if you’re just busy, I get it and I’m here. But if it’s anything about me you can say so. Sorry just been in my head about it” is that okay? In the past I’ve given the impression I don’t have deep feelings..we both did, but really I’m just not good with expressing them.