How to get in the mood to study after long vacation?Watch
Also, this is only such a short amount of time in your life. You'll have literally decades left where you don't have to study and you can just be an adult with a job. you only have to put in this level of effort for a short while and then it's all done.
I usually make a timetable on my notes app for things to accomplish the next day/ during the week! I find timetabling in revision helps me most.
There are also apps you can get where it stops you going on your phone (i have one where it sets a timer and if you don’t go on it for the set time it plants a tree)