Common Dyslexia is part of a proprioception dysfunction where cognitive functions are mostly affected. It is never the only symptom.
Whenever we use a proprioceptive treatment, associated symptoms also disappear. Associated symptoms usually disappear earlier than dyslexia itself. The cognitive functions need some time of maturation to normalize - a short period of time though - and most people can increase their reading performances in a few weeks.
Everything depends on the compliance of the proprioceptive treatment and on the severity of the case as well. The prescription must be correct and compliance overviewed. What is interesting in this new method is that dyslexics only need to come back to the doctor's office once a year and be monitored 4 months after the first visit.