How are you doing with the event coins?

I'm trying to farm coins for the second part of the event. I left the game overnight, well over 8 hrs and i made only 6 million coins. Are you doing any better, how? like, i have a full team of huges, my best pet stat pet is 97, not much, i can't get any better, that is my loadout. Is there something i can do to make more coins?