Puppies often complain about being away from family members, but pups with true separation anxiety typically aren't better off in crates. (vitabone.com)
Unless your puppy is showing signs of true separation anxiety (and this is rare in young puppies), simply ignore the complaints during the day. (raisingrascal.com)
True separation anxiety in dogs is quite difficult to overcome and takes time to accomplish. (pethelpful.com)