Please stop and this is a suggestion reading multiple posts as you will get awfully confused. While R2R is not the only source with direction, it is one of the better,.
To elaborate, you must run a therapeutic minimum as there is a term called treatment clock in which you must adhere to treatment with. Copper Power or coppersafe is my choice at therapeutic level 2.25-2.5 for a FULL 30 days, monitored with a reliable copper test kit such as Hanna brand, not Api
Also monitor ammonia level with a reliable test kit during treatment and would not be a bad idea to add an air stone for added oxygen during treatment
You will also need to leave display tank Fish-Less (Fallow) for at least 6-8 weeks to assure the cysts and trophants have completed their life cycle without a host and have died off
Regarding clock- If you got to therapeutic level today, clock starts today and ends Dec 16 maintaining full level