There are several synonyms for the phrase "snapped to it," which means someone quickly began working on something or regained focus. These include "got back on track," "sprang into action," "picked up the pace," "focused," "concentrated," "got to work," and "hustled." All of these phrases convey a sense of urgency and diligence, and they are often used in a work or academic setting to indicate that someone has started taking their responsibilities seriously. Whether it's a student who has finally started studying for a test or an employee who has prioritized a project, these synonyms all communicate a similar sense of focus and commitment.