Breaking down large projects into smaller tasks can help you manage deadlines in computer science, but it does not guarantee that everything will go smoothly. You may encounter changes and challenges that can affect your tasks and deadlines, such as changing requirements, technical difficulties, or unexpected events. To handle these situations, you need to be flexible and adaptable, and apply some techniques that can help you cope and adjust. First, you need to anticipate and prepare for potential risks and uncertainties, and have contingency plans and backup options. This way, you can minimize the impact and disruption of changes and challenges, and maintain your momentum and focus. Second, you need to evaluate and prioritize the changes and challenges, and decide whether to accept, reject, or negotiate them. This way, you can balance the trade-offs and implications of each option, and protect your scope and quality. Third, you need to update and communicate the changes and challenges, and their effects on your tasks and deadlines. This way, you can align and coordinate with your stakeholders and team members, and secure their support and approval.