got promoted to senior and now I'm scared someone's going to ask me a question I can't answer in front of the team I used to be equal with

Objectively I know I earned this. But last week a former peer asked me something mid-review and I blanked for a second before answering, and I've been replaying that pause for days. Does the fear of looking dumb in front of people who knew you as 'just as junior as me' ever actually fade?