Can’t tell if he just isn’t responding or if he didn’t think there was a need for him to right now?

I texted a guy saying I had a great time yesterday after making out, etc and that I would love to hang out again sometime. He responded almost immediately with “yes for sure!” and then a few minutes later I said “ok just let me know when you’re free” because he said yesterday he was busy most of this week. He hasn’t responded since and so I’m not sure if he just felt like there was no need for him to say anything back until he knew when he was free or what? I’m probably just overthinking as usual lol but I don't know
Can’t tell if he just isn’t responding or if he didn’t think there was a need for him to right now?
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