I was just prescribed prednisone (30mg) x7d for lung inflammation and i have been experiencing serious thinking issues in terms on concentration and memory retention in school. can i stop this early and will i experience any withdrawal symptoms?

Usually ok if...: If short-term use of prednisone or prednisolone, such as for 3-5 days, there should not be withdrawal symptoms, and one should not need gradual weaning. One can check with the prescribing doctor about quitting a course early... mainly to see if instead one should switch to inhaled steroids which don't enter the bloodstream in big enough amounts to cause neuropsychiatric steroid effects.