The mud from Mapie that I’m using right now is also water soluble. Even after it dries you can get it wet and wash it off the tools. And this is what the pros use. That mud is probably not that different from what you used. Like I said. I’d try to take a tile off and see how easy it is. Then decide.

I think this as well. Try to take a tile off and see how hard it is. If you can’t pop it off you’re probably fine. Depending on the grout you’re using that will also help hold everything together.