Should I give it once more chance and reach out to this guy again?

I was texting this guy from a dating app. He asked for my number. On the 2nd day, he replied back to several of my messages (we had about 3 topics going on at once). I sent replies to all of his texts (I sent around 6 texts back). I'm worried my last couple texts to this one thing he said may have been short and dismissive but I was hoping he'd text me back and I could say more! It had only been a couple days since he had asked for my number at that point.

Well, he actually didn't end up replying again and it's been a few days already. Should I send one last text saying hi? Or just leave it?