Contacting promotor and assistant/supervisor in regards to master's thesis after weeks of radio silence
In my experience, this situation is pretty common, so even if the advisor/promoter aren't happy about it, they likely have dealt with this situation before. I think you can let your guilt go for now. The best course of action is simply to acknowledge the lateness without dwelling on it, and try and resume normal communications going forward. I think you know your mistake here, but it is always better to send an e-mail with an update when you hit a deadline, even if you don't have &quot;enough&quot; progress to show. Your advisor likely wants to help, but they might feel like they don't know where to start if they haven't heard from you.
A simple statement such as: &quot;I apologize for the tardiness of this e-mail, I know we had originally discussed a deadline nearly a month ago. Due to the pandemic situation, I have not been able to make progress on my thesis as quickly as expected. Here is my current progress. [description]. My plan for the next few weeks is as follows....&quot; If you have concrete suggestions for how they can help, I would put them in your e-mail. Otherwise, let them take the ball from there on how to support you going forward.
In the meantime, if your situation allows you to access mental health support services, I think they would be useful in helping you find more healthy coping strategies in the future.