exactly how much am i supposed to feed an almost 12 week old puppy?! he currently weighs 1lb & 7oz and he's very healthy (according to our vet) i feed him 3-5 times a day and i give small portions.. but i don't know exactly how small to give him.. sometimes i think its not enough but i don't want to over feed him. also, i've picked up some orijen kibble for puppies and i want to eventually have him on that but i'm not exactly sure how to go about doing it considering he wont eat dry kibble by itself. if i mix the two together how much should i give him? thanks in advance