I know it sounds like a low dose Risperdal but its mg cannot be compared to those of Seroquel.

A sort of normal dosage of Risperdal is 2-4 mg and max dosage is usually 16 which is seen as high. With Seroquel a common dosage is around 300-450 mg.

As you are not an adult your dosages might be lower. The Seroquel you took translates rather well in strength to the Risperdal dosage.