Dreams about failing exams or missing assignments often reflect feelings of inadequacy, anxiety, or pressure regarding your performance and expectations, even if you are in a different stage of your academic career, like being a PhD student. These dreams may symbolize a fear of not meeting your own standards or those set by others. They can also indicate a fear of judgment or a lack of confidence in your abilities.

Consider reflecting on your current stress levels, workload, or any recent challenges you may be facing in your studies. It might help to address these feelings directly, perhaps by discussing them with a mentor or seeking support from peers. Additionally, practicing self-compassion and acknowledging your achievements can help alleviate some of the anxiety tied to these dreams.