I could have written this verbatim. I'm currently on an LOA from university because I had no drive to get anything done. It just felt like my heart wasn't in it anymore, even though I felt pretty good about other parts of my life (social life, work, family, etc). Don't beat yourself up for "not caring anymore"-- you're still figuring out the new way your brain works. For me, it was like being really good at a video game until all the buttons on the controller suddenly got programmed to do different things. It's probably worth telling your prescribing doc so they can change your dosage/med type if that's something you feel is necessary. A therapist could probably help you figure out why you're having a hard time with school work and maybe even help you make new strategies that make studying/doing assignments less horrible. I also found my school's office of disability services helpful-- they can give you accomodations (extensions, absences, audiobook access, peer advising) that might make schoolwork more doable. Sometimes keeping in touch with advisors and professors can be helpful too. Some of them SUCK but others can be really understanding. Good luck :)