Rules are made to be broken, but this tip can help you visualize a paper's length to estimate how many ideas you need to write your paper. This is just a suggestion - sometimes ideas take many paragraphs to describe.
In MLA formatting, 250/300 words = about 1 page. The sample below is for a 1200-1500 word paper, or 5 pages.
Academic searching, reading, and writing (and editing) takes more time than texting your friends. There will be bumps along the way - contact a librarian and/or your professor if these bumps get too big. For a five page essay that requires use of 3-5 sources, plan on using at least two weeks. Everyone procrastinates - you have to learn your own style.
These links will help you come up with ideas on how the paper process will go.