Becoming a zevist is about dedicating yourself to Zeus and truth.
I would listen to your heart and continue to study, and do this when it feels right. You could even pray to Zeus and ask for a sign if you’d like. I’m not sure what “tangible “ proof you’re looking for that he directly said somthing of this sort. Although I see proof in everything accomplished here. Rather than ask Zeus you should maybe also ask yourself , if you think you should become zevist, based on the dedication ritual and what it says. And what’s in your heart