No longer in school, but while I was couple decades ago, I found that sitting at the desk studying all day was mostly inefficient. Some study said that people could concentrate only for 15-30 minutes and then the mind would just wondering around. Maybe you should try to spread your study hours and put in long breaks in between and talk to people and participate in some activities. Social skills in these days are more important than hard skills which could be obsolete in a short period when new technologies take over. My DD is in her 2nd year in college, and that’s what I always says to her to study for a few hours and take a few hours doing something else before study again (and also study different subjects for one hour each is more efficient study the same subject for a long period).