Just ensure she is well hydrated and active. Monitor the intake and diarrhoea frequency/amount. If she gets too dehydrated, she may need to go to A&E. Also examine the food she’s taking. No leftover food/food that’s kept too long. No new ingredients, etc
Better to see PD. My daughter had diarrhoea recently too. She has diarrhoea for 6-7 times for 2 days and I brought her to see the PD. She is still eating well, only diarrhoea... Best to make sure your baby stay hydrated.