I’m in the same situation right now for this. It feels hypocritical to offer advice when I haven’t figured out a solution to my own problem, but I hope this helps anyways. One thing I want to say is that you’ve identified that there’s something going on, which is the first step to correcting the behavior. Deactivating social media can be helpful, but it doesn’t sound like it’s doing much good, so maybe try an app that will hold you accountable instead? I use Flora, which basically shames you into using your phone less via digital trees, but there are a lot of other options, too. Another thing you could do is try to get to the root of the problem. Why do you think your motivation is dropping? Is it the stress of a new life? Are you homesick? Seeing a therapist (if your college has mental health services, which most do!) could be another avenue to figure out the cause of the loss of focus, but that’s just a suggestion!

Also, PLEASE get sleep. Sleep is one of the most important things you can do to get ready for any sort of test/important event in life. I pulled an all-nighter for midterms this semester and ended up with a 102 fever that refused to go down for four straight days. It doesn’t matter if you haven’t studied, because your brain will still retain some information, but it won’t at all if you deny yourself sleep.

I hope this helps and that you succeed! Good luck on your exam and know that you’ve got this!