use the book that creates a holy bottle effect and one that makes you refill your eleth gauge when you visit a town. warp to the dungeon (world's eye?) and grab the item, exit, warp to lhant, warp back there. rinse and repeat. you can get 1 or 2 per visit, and with the right route you can complete a lap every 4-5 minutes.
load the save by the legendary metal and you can pick it up again
repeat as needed
No kidding? I tried loading the save right after saving, but never tried loading a different save then coming back to the one in World's Eye. I don't see the logic of how it works. But if it does, nice find.
Goodbye Chewy. You were the best friend I could ask for. Rest in peace, buddy.