Gwylan rituals

Okay, I have Gwylan at 79% interest right now. How much more time will it take for him to say I’m ready to become a vessel? I unlocked the ability to ask him for help with my TF thank god, but there anything I’m missing? I went through the mannequin maze already of course and I’m able to do rituals with foxes, wolves, and leaves, but I want to do them with Gwylan.