Hey David, I have found a solution. Here is what i have done:
1. First added a Genereatblock directly in the content at the desired place (from where I want it to start scrolling).
2. I added this css code to float it to the right and scroll as the user scroll the page.
@media (min-width: 769px) {
.floating-content {position: sticky;
float: right;
top: 25%;
margin-right: -301px;
}}
Here is the link of page – https://www.staging2.nerdblogging.com/schema-markup/
Can you please check and confirm whether it is the right way or not?