I am currently revising for degree examination after which (if successful) I will get Bachelor's degree in Computer Science. This is probably the time when I feel the most like an impostor.
I don't think I will overcome this until after the examination which is in two weeks. So wish me luck and hopefully, I'm not an actual impostor.
Good luck! Hopefully your success on the exams can be a validation of your non-impostor-ness ;)