Thanks for your query.
Your child is having loose motions which is mostly viral in nature and settles in few days.
Most important is to maintain and monitor
Continue with probiotic
as advised as it helps in restoring normal flora.
Also give lemonade,buttermilk,curd,banana,rice porridge.
Watch for any feature of dehydration
like decreased urine output/lethargy/increased thirst.
In case symptoms persist get him reevaluated.
Hope this helps.