is he waiting for me to text or is he not interested?

I met him because I was his client and he was an advisor for my car service. he was flirting with me in person and through text for 4 days while my car was getting serviced. of course, bc he was giving me updates on my car, he initiated texts. but when the business text was taken care of, he would continue texting me about things unrelated to business. he asked for my insta too. on the last day, he even tried lingering when everything was all set and I was supposed to leave and told me to let him know (text him) how this one thing we were talking about went. I initiated the day after and gave him the update. we texted for a bit, and then that was it. then one day gone by, and I don't hear from him because I guess I was expecting him to spark a convo. now it is halfway through day two and haven't heard from him. do you think he is not sure and wants me to initiate to give him confidence that I fancy him? or is he not interested in me anymore. [from previous photos that I 've shared on here, you said that he was indeed flirting with me and thought I was cute or something]