Help mee!!!!!

So Im texting this guy for over a week now, we got to know each other and he was super cute and amazing and he was really interested in me on the first 3/4 days and he would reply very very fast even if I didn’t, but yesterday and today he seemed really off and he doesn’t reply to my text after hours and I know he’s online and when I check his other social media he’s there but he won’t respond to me, I don’t know what to do I’m really frustrated because I really like him and I don’t want to text him when he doesn’t reply so I don’t seem needy? Idk helpp me outtt I don’t know what to doo :(((((

(Sorry if my English is bad, it’s not my first language)