Hey StreamMonkRPGs, when you release a project there is usually an option to submit this to a game jam and if you have already entered the Heroes of Adventure TTRPG game jam then this should appear as an option.
I found some details at the following link https://itch.io/docs/creators/game-jams#jam-customization/jam-contributors-and-h... (scroll down to the Submission Process) for a screenshot of what you should see.