Any suggestions would be appreciated as my supposedly 9 week old rescued puppy is very weak on his feet, constantly sleeps and wants to be held which The only time he doesn't cry! He doesn't seem to eat the 4 meals I prepare although he does eat and seems very interested in my food! I've taken him to the vets and is currently on antis as she said there could be a possible infection but didn't say what! Have anyone had similar experience with their puppy?