I think you did great with the responses! You were upbeat and kept your texts short and sweet. He's got to be thinking to himself that you're doing pretty well without him... that's creating the mystery, in my opinion. You're keeping busy... he's wondering, busy doing what or who's she with... Nice job.
If you feel good about this interaction, then I'd say, yeah, go dark again until H contacts you again.
I know what you mean about it being a big deal though... I'd be re-reading his text msgs and responses and wondering about the tone, intention, etc. Try not to obsess if you are. I think you handled it very well.
