[anonymous]

“I’m just impatient since we have been dealing with loose poops for 3 weeks now”

That’s all, just 3 weeks. Listen to the vet, keep it simple, continue the prescription food, the dog is a baby!

Really, do you think adding phony baloney supplements and such will help? I think not.

Add a little water to the food, or plain home made chicken broth (no salt, nothing added)
to prevent dehydration.
PS: Some dogs have soft stools no matter what. As long as it is not diarrhea, or watery, bloody.
I would continue to work closely with your vet.
Good luck