You still have AT LEAST ten weeks before you need to submit your primary. Look up soup kitchens, DV shelters, and homeless shelters in your area. Find out how to volunteer. Try to get at least 8 hours per week, even if that means giving up a weekend day (or taking PTO one day per week). Did you have a chance to use MSAR to see which public schools accept out of state students with a 516? Arizona, Wisconsin, Michigan and Ohio State may have been a reach. Also, beware that many of these schools have a very high service expectation (to underserved communities), such as Creighton, Tulane, and Boston University. Mayo, Michigan, Stanford, and Northwestern all tend to have a higher research requirement.