I think I'm in the similar situation.
I got 3 tablet fragments. First one nearby the place where I got helmet, second one at the temple where I got fan, and the third one at the temple underneath the starting house you mentioned.
Else, I found a door-like thing near the 4 statue puzzle which I don't have any clue to open it and an empty pedestal at the temple in the lost city.
I upgraded all 3 tools from the blacksmith to slay Argos, Limos and Mammon only to get the new key. Also found all 15 shared to get access to the hint room, followed the masked man to the edge, and gave the music box to Ana. Now I have no I idea where I should go to proceed further.