Time to do the hard miles. As a second year, the results will go towards your final grade. Make a clear plan of study - don't do the easy subjects first, start with the ones you struggle with most. Break down your day into chucks of study with chunks of time off to refresh. Usually, 30 minutes on, then 10 minute off. In the off period, do NOT look at your social media, listen to some meditation music and relax, do some stretching etc.