OK. Jut had a request increase the post length of posts on the home page. I at one time needed to limit the length of of the post on Homepage. I managed that. This was similar. Found a resource here that had several options. The on ehtat worked for me was this:
Find the function.php file inside of your WP theme. If you dont know its in this directory: wp-content/themes/ here you need to choose the theme folder you are currently using. You can find out what this is by going to your WP admin page and under appearance > themes it should tell you the name of the template. The folder name “should” be similar. functions.php should be right inside there.
Now, you’ll add this all by itself :
Thats it. Worked like a charm.