If you are faithful with your chelation you will see your ferritin drop. You are on the maximum dose and should see results within 6 months. If the progress isn't fast enough after that, you should consider splitting the dose into two and taking half in morning and half at night, as this will give you a bit more chelation. Since you just started in April, you won't see any big changes in ferritin yet, but be assured that iron is being removed from your organs.