Organizing your time and working out a concrete schedule can help a lot. You can be as specific as "will do x from 1-2pm, y from 3-5pm, etc," to "will do x,y,z on w date," or something like that. Find out what is absolutely important and what you can't drop. (Classes, homework, etc) and things that are not as important so you can have them be more laid back (TV, games, etc). Work out about how much time you need for each thing you need to do. Manage your time to be as efficient as possible, and you'll definitely find some spare time for YouTube videos
Best of luck!
Thanks for the help!