To remain consistent in their study routine during UPSC preparations, aspirants must establish a well-structured schedule with dedicated study hours. This can include setting short-term goals and milestones to track progress. Additionally, incorporating periodic breaks and religiously following the routine can help maintain motivation. Utilizing techniques like the Pomodoro technique and productive study environments can also enhance focus. It's crucial to create a balance between study and personal life, allowing for adequate rest and rejuvenation.