Went from texting every day to every 5 days once I left for a work trip?

I met this guy on a dating app, we seemed to hit it off the first 2 dates and went to multiple places and spent almost 5 hours together each one. We also texted every day. However, right before I was supposed to leave for my 2 week trip we were supposed to see each other again but couldn't anymore because he "got flooded with more work and calls". But he still texted me normally, until our chat came to a close and I told him good luck with his week. We didn't text for over a week, and I reached back out and he was still asking me questions and mentioned to me about how he was moving and was overwhelmed at work, but once I responded he took 5 days to respond. Then a week to respond to my next one, telling me he would still be pretty busy the next few weeks but was still asking questions and had thoughtful texts.

What do you think? Was he slow fading/using busy as an excuse or do you think he was genuinely busy?

And if it was a slow fade, why? Did it have more to do with the timing of the early stages (my trip and his work) or do you think he just suddenly dropped interest?

Went from texting every day to every 5 days once I left for a work trip?
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