You need to start getting real with yourself - what's more important, social media or studying for exams? You need to value your revision more and accept that the only way you're gonna do well is if you just step away from the social media for a while and work your ass off revising.
No-one else can change it for you, you have to force yourself and yes it's sucky and you don't wanna do it blah blah that doesn't matter, just do something about it.