To be clear, are you saying this is something you think was caused by the vaccine, or something you had before the vaccines? If the latter, what are you suggesting occurred in Jan 2020?
I wanted to rule out the vaccine as the cause, since it started before vaccines were available. And wanted to offer a similarity to the OP. A virus or some illness I got back in January 2020 caused a deregulation in my immune system that I still suffer from today in 2023.