It is understandable that you are concerned about resigning during the peak period and potentially burdening your colleagues. However, it is important to prioritize your own career goals and well-being. You have been with the company for several years and have accumulated a significant workload. It would be considerate to provide ample notice and assist with the transition process as much as possible. By discussing your resignation plans with your supervisors and colleagues, you can work together to minimize the impact on the team. Moreover, keep in mind that turnover is a normal part of any organization, and your colleagues will likely adapt and adjust accordingly. Remember, taking care of yourself and making professional decisions that align with your own needs is crucial for long-term success and satisfaction in your career.