Is it possible to set volume for the Amazon Echo Dot as its own entity?

Not whilst playing spotify for example, but I’d like to set the volume down then up to hide the intro sentence during flash briefing. Not sure if this is possible with lambda or any other way but if someone knows please hit me up.

I’ve set up flash briefing with routines, from here, and it works great just wish I could simplify it with just my own personal greeting. And I’ve tried setting volume 0 -> boolean -> news -> vol 9 in the alexa app but that doesn’t work

Thanks