I would caution against using such a large dosing repetition schedule as suggested above with a person who alrready has significant organic pathology and low vitality. You risk creating more havoc than you can possibly imagine.
You haven't mentioned the age of the person, especially heed this caution if you are attempting to treat an elderly person with organic pathology in their constitution.
Use a conservative 'test dose' that is, one dose, or one series of 3 doses, then wait and see the effects BEFORE repeating the remedy.
This "take X remedy 3 times a day for 3 weeks, one-size-fits-all" mentality has no individualizing quality to it - which is the basis of all homoeopathic prescribing.