Per Dom:
He is now up to 14 lbs, and I refuse to give him more until his late
night feeding, but this goes on all day AND NIGHT. He wakes me at
least 3 times a night. I can't see why he wants more food when he
leaves so much behind.

Ours has strong likes/dislikes food-wise. The wrong brand
and/or the wrong flavor and it won't touch the stuff. I'm
guessing that even though two brands may say they're the same
thing, the contents may be very different in terms of flavor,
quality, freshness... or whatever.

Anyhow, it has us trained to buy the right stuff and give the
wrong stuff to our #1 daughter whose barn cats aren't so picky
if/when we make a mistake shopping.

But that does not address the overeating thing.

Neither does this, but I'll throw it in: at night, we lock ours
in the downstairs rec room where it can stay there or go into the
garage and/or crawl space. Improves the quality of our sleep
significantly.
--
Pete Cresswell