i would make my own schedule that adheres to my regular class times during those times i would make myself leave my room - even if its just to go to a common room or study area if youre in an area where you can go work in a coffee shop safely or a library safely i would make that my routine when i was in college i took voluntarily several online courses as electives to make myself work id set an alarm and actually get up and get dressed as if i actually had a class to go to if my dorm room or apartment got too distracting id go to the library and do my classwork there   if you stick to your normal class schedule as much as possible and create your own structure it might help you navigate this challenge a little better i know how much it sucks and having it just suddenly thrown at you makes it harder to adjust if you have friends in those classes see if they still want to meet up during class time even if its only via skype or a google doc or gchat that you guys can use to discuss material and vent i know were supposed to be minimizing social interaction so virtual meetings might be a great way to help provide some structure too you could even see if your professor or ta would be down to do office hours or some review during your class time too theres lots of virtual meeting apps out there like zoom good luck you can do it