Thanks for writing to health care magic
Now these loose stools could be because of several reasons.
One it could be because of viral infection. In such a scenario there will not be any blood or mucus associated.
These viral diarrheas subside on their own and only thing you will have to do is monitor for dehydration
Monitor for signs of dehydration.
1. Decreased skin turgor
2. Increasing thirst.
3. Sunken eyes.
6. Decreasing passage of urine.
and other rehydrating solutions containing sugar and salt are required.
Another cause could be dysentry
. Here the stool is associated with blood and mucus. Antibiotics are required.
Another cause could be allergy
to the new food substances that are being introduced.
Stopping the new substance will result in improvement
Hope this helps