Just do a little bit of each assignment day by day and make every bit of available time useful. Before you do anything, just map out and brainstorm some ideas so that way your mind is clear and you can have your thoughts ready to go. Always take breaks in between so your mind doesn't get cluttered and overloaded with content. Ask your teachers if you have any problems, or if you don't understand anything. And don't stress yourself out too much! Just relax and breathe. You can do it :)
also: next time don't leave all 24 of your assignments late heheh