Siri short-cut questions

Can data be passed to a short cut verbally?
Trying to a very simple “Nap Time” shortcut: turn on Do Not Disturb, Set a Timer.
I want to be able to say: “Nap Time 20” and the timer is set for 20 minutes, as well as turn on Do Not Disturb.

Second question: Is it possible to turn off Do Not Disturb after the timer goes off?

Thank you!