I know you are not asking for advice, but your situation is not unique, at all. The age of scrolling has impacted our capability of long term concentration, has eroded the parts of the brain supposed to let us get «  into the flow » and store information for the medium term (and therefore the long term) memory.

If (big if) you want to undo it, it’s a lot of work, but it will not only help with reading, but also with all long term efforts, such as long term host projects that require sustained concentration, learning new skills and so forth. The path is to decrease the amount of short term enjoyment every day, and slowly replace it with longer term enjoyment. This practically looks like less scrolling and more reading/crafting/exercising without distractions. Short stories and podcasts or documentaries are a great form factor to start un-scrolling. Personally, if you want to get back into reading, I advice a low stake page turner as a first book. Something to train the brain while enjoying every page. A step at a time the length of the books can increase, or not! Just get back into enjoying.