> i think he probably needs to move up to a more filling food fairly soon.
>
It's the puppy food that is most filling and calorie rich.
He will probably always be a good eater, most Spaniels are, which is why so many are so fat when their owners feed to appetite Rather than to how they look and feel.
I would have reduced him to 3 meals a day by 12 weeks. This could be why he wolfs it down as he is ready for larger meals. He should be on about the same amount just split in fewer meals.