Exactly. I'm currently in college and working on multiple startups. I've designed my schedule to where I start class at 2 or 3 PM every day, so i wake up at 6:50 and get on campus by 7:30 to work in one of the study areas on my projects.
It's easy to get overwhelmed by things. Just make sure you tackle them one at a time. Being an entrepreneur takes some hardcore dedication and passion. Switching from work mode to school should be easy for you-if it's not, you need to reassess whether you should be doing these particular projects or not. Passion is key.
THAT is your problem.
You want to be an entrepreneur? You will have to switch modes 4,397 times per day (on good days). "Switching modes" should take seconds, not days.
Figure out how to do this and get back to work.