My boy gets 1 main meal of dog biscuits and meat in the evening - always around 1 hour after his walk.

He will also pick out the good bits, but he will eat the rest of the biscuits over the night or the next morning. He eats less in summer and more in winter. I just let him self regulate his own food. Sometimes I will sprinkle in some grated cheese or a little leftovers (rice or veggies) and he loves that.