Yeah my degree is completely unrelated to what I do now. Once that first job lets you get your foot in the door the academic credentials are typically far less relevant than work experience

Seems to me you only faked yourself and were professional all along

I can relate to this…did manufacturing and machining most of my life, 7 years ago got some electrical qualifications, a year ago I talked myself into a maintenance role. I’m inquisitive and don’t stop til I’ve got an answer, that attitude serves me well.