A million is not what a million was.
So, knowing that, it depends on “when” “what it used to be” was.
so it would take ruffly 2 million to equal 1 million 20 years ago, and 4 million to equal a million 40 years ago (this is just a ruff rule of thumb)
you have to save and invest in the stock market like the dickens, cash money funds just won’t do it.