only pray to a certain Imm if you really intend to follow their religion.

You probably will do fine if you pray to nobody specific and write a note to the Imms about what your character does. Like: Pray to the Imms - wait some time - write a note - wait a bit longer/do some ranking - get back to your place of worship - do some praying emotes/wait a bit

Repeat the same thing the next time you log on. I got empowered very quickly that way, just give them some time ...