The term "whip into" is typically used when someone wants to describe the act of completing a task or finishing something quickly, efficiently, and with energy. However, some antonyms for "whip into" can be "drag out," "procrastinate," "dally," and "linger." Using these terms, one could convey the opposite sense of urgency and speeding things up, instead suggesting that one might take time and slow down, thereby wasting time and delaying progress. Additionally, one might use "sluggish," "leisurely," "languid," or "unhurried," antonyms to highlight a distinct lack of urgency while tackling a task or working through a project.