When you have too many tasks at hand, you might want to start by writing your tasks on a sheet of paper as a list. This will give you a better idea of the tasks to be done. So, writing the tasks down could be a good start.Then divide those tasks under 4 labels - URGENT n IMPORTANT, NOT IMPORTANT BUT URGENT, NOT URGENT BUT IMPORTANT and lastly, NOT URGENT, NOT IMPORTANT. Now, allot your time accordingly. if you could do this, there are good chances of you completing all the tasks in time.
Hope this helps