I’m not at all a fan of Evanger’s at all. They’ve had lots of major quality control issues.
I see no problem with your feeding your adult dog puppy food, just be aware that it’s typically higher in calories. Puppy foods are AAFCO growth foods, which are same thing as ALS foods. My adult Cavalier is about the same size as your Coton and she occassionally gets puppy foods in her rotation. She eats about 350 calories per day from various sources; ie: kibble, canned, fresh fruits & veggies, lean meats.
It’s possible your pup is being overfed, which is probably the leading cause of loose stool. They miggt be reluctant to eat because they’re not really hungry.
I would be really careful about home cooked unless it’s properly balanced. If you’re just feeding fresh or whole foods as toppers, just be sure it’s not more than 20% of her daily calories. A homemade, properly balanced, diet is the best thing you could feed them, but it’s tricky. Raw green tripe works wonders when you’re trying to entice a picky eater at mealtime.
