My four and half year old daughter starts school tomorrow, after been dignosed with impaction and taking up to 8 sachets of movicol to clear blockage, we are still getting leakage, she withholds poo constantly and I want to reduce dosage so she does not have so many accidents at school, hope to reach a dosage that keeps her regular but with no leakage. She witholds constantly though, how do I stop herr withholding? Help please