During Gatsby’s funeral there were only few people who attended. These were Nick, Owl Eyes, a few servants and Gatsby’s father, Henry C. Gatz. He came all the way from Minnesota and was proud of his son. He brought with a book in which a young Gatsby had written a schedule for self-improvement. He tells Nick about Gatsby’s early life while showing him the book. After the funeral, Nick decided to move back to the Midwest.
I hope this helps.