I’m sorry, but you are not going to be able to make a pact with a demon to pull your ass out of the fire in so little time, especially as a beginner with no experience.
We are not a Wizards ‘R’ Us where you can get free ritual done when you need it. We get asked far too often, and most of us have neither the time nor inclination to do so.
Instead, why don’t you try chanting this mantra I received from the archangel Metatron before studying, to help you retain information?