It usually takes 3-5 days. The recovery speed mainly depends on the cat’s physical condition and whether the pet owner has helped the cat regulate its gastrointestinal tract. For example, giving it some probiotics can better regulate its gastrointestinal tract. It can also relieve diarrhea symptoms as soon as possible. At the same time, you must also follow the 7-day food replacement method, and you need to replace new food step by step.

If the cat itself is very energetic and can return to normal without new food, this kind of diarrhea is a normal phenomenon and may not occur on the day of changing the food. It is also possible to delay the start by a week. The gastrointestinal tract has a process of adaptation to food. A sudden change of food may cause gastrointestinal discomfort in cats, which may lead to diarrhea. It is best to start the mixed grain transition again, at least for one to two weeks.

When changing food daily, you should refer to the "Seven-day food change method" or the "Ten-day food change method" to gradually change food. Feed the old and new food together, and gradually add new food every day until the new food completely replaces the old food. If you have suddenly changed to a new food, you can fast for half a day or one day, feed the old food again, and then gradually change the food.