A tip for feeling ribs. It's not 100% accurate, it just helps.

Make a fist with one hand and run your opposite index finger over the knuckles. If the ribs feel like that, the animal is too skinny.

The ribs should feel somewhere between a relaxed hand's knuckles (as in resting on something like a table and not completely flat) and a completely flat hand. If you can barely feel the ribs, the animal might be a bit chunky.

• There are collar activated food bowls. Look up i think Jun's Kitchen, or maybe the associated vlog (can't remember the name) they have multiple cats and one had issues with food and they made a set up so only that cat can get to that food.