I can't seem to find the 2nd and 3rd tablets. I have looked everywhere. Any help would be greatly appreciated. I have done everything on map. This is all I need to finish game.

Gudy Gudy Gudy

Well I think I can help with at least one of the remaining tablets but I really have no idea where I got the second one. There are two locked doors off of a larger room with fallen columns (that helps when just about all the rooms have fallen columns ) You need to open these doors with Glowstones. Inside each is a lever which must be appropriately activated (click). Doing so opens up a hidden room which is back in that larger sort of fat "Y" shaped room with the fallen columns and a little sort of water area right at the base of the branching uprights on my "Y" analogy and in there is a chest with a tablet piece (not in the water!! a room will open just beyond the water!).
After rereading this I have no idea if I helped at all. Hope I did!

Wyv