Is a Ceruloplasmin of 20.5mg/dl low enough to cause symptoms? Am I barking up the wrong tree?

For the past year I've been going through a "Cognitive Decline" so to speak. Have been having Trouble Speaking, have had Brain Fog, etc. In June of 2025 I had Blood Work done and my Copper RBC came out to 0.79 ug/mL while my Ceruloplasmin came out to 20.5mg/dl. Since then I've been able to increase my Copper to 94 ug/dl and my Ceruloplasmin to 24.2 mg/dl, but I still feel incredibly symptomatic. Do I simply need to take Copper for longer? Is the damage I've done to my body irreversible? Am I simply barking up the wrong tree?