Jesus said, "Wherever two or three are gathered together in my name, there Am I." He didn't say, "two or three million."
Spirituality is not measured in numbers, but in depth of Presence. The 'movement' begins as a Family of the Heart, intimate, local, circular, rooted in the earth. Innocently, its vibration of love attracts others.
Then the movement grows into a corporate hierarchy. Technocrats take over, with glossy websites and busy words, advertising everything BUT the silent Presence. They measure their success in numbers, and the depth is lost. I have seen this happen in more than a few spiritual movements and it makes me sad.
If you want to get back to Presence, stop counting. You don't need to repeat the mantra a million times, just once or twice, for it to dissolve in the silence of infinite Being. In the same way, you don't need a million people, just a hug.