Siri Voice Feedback won't turn off

I want to be able to say, "Hey Siri turn on the lights" on my MacBook Pro, without Siri talking back.

I just want her to turn on the lights with no verbal response.

I tried turning off Voice Feedback. But Voice feedback can only be disabled if, Listen for "Hey Siri" function is disabled.

is there a way to make it so I can say "Hey Siri" and she won't say anything back? without Turing off the volume of my computer all together? I'm usually working on music so I need the sound. I'm also using a Universal Audio Apollo audio interface.

thanks, JFK