My 8 Month Old Female Golden Retriever Puppy Has Been

my 8 month old female golden retriever puppy has been lethargic for two days. She drinks water, eat her dinner tonight (I made chicken bone soup broth for her) but if I don't interact with her she falls asleep. She has been sleeping all day but when I get her up to go outside she greets her mother eagerly and jumps around. Then if you leave her alone she lays down and falls asleep.