wearing too many hats

Verb

wear too many hats (third-person singular simple present wears too many hats, present participle wearing too many hats, simple past wore too many hats, past participle worn too many hats)

1. (idiomatic) To try to fill more roles at once than is realistically possible.
   • She is asked to be a comedienne, dancer, stunt woman, singer and dramatic actress — and the truth is that she is trying to wear too many hats.1963 August 10, Cameron Dewar, “Too Many Hats for 'Jennie'”, in Billboard