How to deal with him?

My bf texting me back after hours, I reply again and it takes him to reply again another after 6 hours! The last 3 days it’s like that..

All he say:

“Sorry baby I was sleeping”

“Sorry I was busy with work”

That’s all what he reply’s after hours! There is no deep conversation.. I told him I do t like ur way.. but still he’s doing it. Though he’s active on social media and online on whatsaap.

Is he losing interest? How should I deal with him?