No. It would be easier without people deeply invested in the status quo system directing the political system from outside, but which marketing-focussed-label applies to the birth year of representatives in Congress has pretty much no bearing on that, even if age-cohorts correlate with differences in views in the electorate.
We don’t have a sortition system where you might expect people in Congress to be otherwise typical of their age group, after all.
If you want the values of Millenials more represented, you want more Millenials voting and devoting time and money to activism; more Millenials in Congress isn’t itself a recipe for change. Finding 535 Millenials that the establishment could rely on to represent their interests wouldn't be challenging.
Nit: In a democracy, you are the government. We all are. There is no 'them'. They are us.
I know, I know. What I just typed was naive pedantic droll.
But if you really do believe it, then it does become true, kinda. It takes work, a lot of work, very hard work. But votes and service to the community really really do matter.