Texting advice?

Had a GREAT first date with someone. I’m 34F and he is 34M. We both agreed. He texted immediately to set up a next date. Unfortunately that week his grandmother fell and he has to travel to another state to move her into assisted living. He says let’s take a rain check. We are in pretty constant communication for the next few days. He knows my birthday was yesterday. He on Tuesday had asked me my birthday plans / If I was excited / and what I wanted for my birthday. I replied saying “quality time is my love language so my friends going to dinner with me is gift enough” and then I asked how his time in the other state was. No reply. Dead silence since Tuesday. No acknowledgment of my birthday or reply to the text. I’m pretty annoyed by it. I had a feeling that taking so much time in between dates would be a problem. Now I leave for vacation for Labor Day. Should I text again? (I would just like an answer either way) or let it be. What would a “non crazy” text be that says like “hey hello? What happened to communicating?” (Something he said he prioritizes) I don’t even know when he is returning at this point.