What Is The Right Dosage Of Probiotic To Be Given For 3 Month Old?

My daughter is 3 months old and I had bought her Zarbees naturals baby probiotic supplement. The dosage info on the back is for a 24 month baby, as the powdered supplement is already measured out in individual packages. So I m curious is to how much I should be giving my daughter, I started her out with 1/8 tsp. Is that too less?