How to handle an argument w ur SO

I’ve been dating my bf for about 5 months now and we got into our first sticky situation.

We talked it out, I understood his concern and apologized for doing something I didn’t realize was out of line.

The last three days since this conversation he has been cold and blunt and it’s making my heart ache. I’m losing the desire to text him as I usually do because I don’t want to put out effort that isn’t being reciprocated but at the same time I don’t want to make this period of coldness longer if I start texting back the same way. My other thought is if I just tell him I’m going to give him some space to collect himself (but it wasn’t a huge argument at all - it was more of a discussion of him not agreeing with something I did) so he may think that’s ridiculous. But maybe if I stop texting and giving attention he’ll realize he misses that and needs to provide mutual effort to get it.

I get it could take some time to get over things, but there’s not much else I can say or do to make the situation move along any faster and I was very sincere and apologetic for my mistake so I just wish he’d move on from it.