rushing as a sophomore

should i be worried if girls from sororities aren't adding me on facebook/insta/twitter? i'm already friends with a fair amount of girls in sororities at texas because we went to high school together/know each other through mutual friends but my friends that are freshmen are getting friend requests on fb and i feel a little neglected honestly lol.. does the submission date of your panhellenic registration form anything to do with it? because i didn't get accepted until mid-June and wasn't able to turn it in until then