Not if “believe” from the followers is some kind of cosmic energy that powers the gods or defines their hierarchy, a pandimensional twitter subscription counter of sorts. In that case the last thing you want is to prove your existence as a god, because as soon as your existence is proven all believe will pop out of existence and will be replaced with knowledge of the existence.

Believe is only possible when the thing to believe in is vague and unknowable, you can’t by definition ever believe in the existence of anything that you are sure of.