First, you don't have to use discord, it's just optional. And hey, you don't have to actually use the entire time the jam runs, a day is enough. And even if you can't finish a game, making a demo, a small thing... That still counts as participating! Don't give up, even if your game is one level or room, quality is more important than quantity in gamejams! This game jam is just so you get something done or you learn new stuff, you don't have to create a masterpiece (if u did tho, that would be cool lol)