I just found out on the net that the Titan Arum can stay dormant for several months after the leaf dies.

Just in case no one knew.

I found that for the first few years they would have leaves continuously, sometimes three at a time. After that they do have a period of dormancy but only one leaf at a time. Mine's gone into a longer dormancy than it had previously but the tuber still looks quite healthy.

I have seen some on the net that look like mine, with the tuber's center wasted away. The bigger ones seem to have that look.

I have never seen mine grow more than one leaf. Are you sure yours is a Titan Arum? Did you grow it from seed?

Mine's Amorphophallus titanum from seed. The leaves have always been typical of A. titanum. It's the only Amorphophallus I know that has multiple leaves at some stage. Although, my Amorphophallus albispathus has developed a second leaf this year but I'm waiting for it to go dormant before checking whether the second leaf is coming from an offshoot tuber.