Learning and Research Take Time
Learning and research take time and those who succeed have learned to make time to do it. Your professors know this and this is why they design most larger research assignments to extend across half a semester or more. Better and more advanced students may look like, and feel like, they are writing their papers at the last minute, but most likely they have been reading, thinking and taking extensive notes for weeks and are spending the last few days, not hours, putting together the final draft.
So expect to spend some time every week on any research assignment once you receive it, even if the final deadline is months away. That will ensure that you can focus on doing good work at the end and not fall prey to panic. Use the Assignment Calculator to help you plan your work and keep you on track.