Take it easy, and try to make sure you finish something. Learning to make a project in the scope of a game jam timeline is a skill. 
If you haven't made a game before, or haven't used Godot before, I would start doing tutorials now before the jam starts.  Learn how to make a platformer  now, and when the jam starts, make a new project thats on theme and you won't have to learn how to do something for the first time ever during the jam

Hi ! erkbob   it is my first game jam too . 

In the rules you should or work solo or  team up to 5 jammers and i am  also a game dev .

 Do you want to team up we also another game developer  and sound composer on the board and  i am also looking for the artist , 5 of will win this jam (and other 2 devs )