I would be grateful if anyone could contribute to this;

My two 15yo (male, neutered) cats are currently being fed on Felix as good as it looks pouches (fish variety). They get through around 4/5 pouches a day each and seem very hungry all the time. Is this in line with what anyone else experiences?

They are wormed and definitely not overweight. Dry food is not really an option as one of them has teeth missing and will just gulp down dry food and then is sick.

It seems a lot to me but maybe it isn't...Would appreciate any input. Thanks