Can I add chicken broth to puppies water?

Hi I have a 11 week old siberian husky and he has had diarrha off in on for the past 2 days (I think he got into the cat food and ate some rocks)My vet has prescribe some Forti Flora for him and it's only working a little bit to harden his stools. I'm afraid that he will get dehydrated and playing with ice from the fridge has lost some interst to him, he is drinking, but I'm not sure if it's nearly enough (doesn;t seem as much as usual) He is still energetic and is vaccinated up to date. I have read online to intise a dog to drink water is to add chicken broth in the water, but I haven't found anything if it is ok for puppies. Thank you for your imput!