Brucies hungry all the time.

[Tav]

Hi brucie is a male 9 month old he's was on 380g a day 1 and a half cups in the morning then the same at 3pm. Now he's 9 months old I've cut his food down to 300g 1 cup in the morning and the same at 3pm but the problem is that he's starving all the time. It doesn't seem a load to cut the food down by 1 cup a day but he seams hungry all the time. Should I still feed him the 380g or keep to the 300g I don't want to under feed him. Food time for us is a nightmare he's trying to jumping up on table when we're having food ,any advice would be much appreciated.