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To free feed is to leave their kibble down 24/7, they should be able to get to their food/water whenever they want. You'd be surprised, mine have always been free fed, and never really sit and just eat, they will pick at their food a little bit all day..I wouldn't worry, if your other dogs have had their shots, about your little guy. I have always brought my new pups home when they haven't had all their shots(except the last one), and never worried..I wouldn't give free roam of the house, I don't even with mine, and they're housebroken, they have their areas that they're allowed in..would love to see pictures. My new one is 5 1/2 mos. and although the vets scale said 2 lbs. mine is reading 1 1/2 lbs. she's 8 1/2 inches long through..not sure how high she is, will have to measure that yet...also, how old is he? Once they're over 12 weeks, and they're eating well, they really don't need the nutrical.