Context:

I met this great guy who's 4 years older than me and doing a PhD. He is also in three bands and has other hobby's too.

Last week we went on our first date and it was great, we clicked, had great conversations without any awkward silences and he immediatly asked me on a second date.

Due to him having a conference for 6 days our date had to wait till tomorrow.

Now the problem is, even though we did text frequently for a few days before the first date I have barely heard him since the second sometimes not texting for 2 or 3 days. (When he does text he does seem genuinely interested).

Should I bring it up to him and talk about it or is he just not into it?