Hey! I'm in the same boat, this is my first game jam. I have done some hobby projects before but I tend to give up on them after a few weeks lol I myself use unity with C# and don't have too much experience with python itself but I am a professional coder so I do know a thing or two.
For coding, at what level of coding are you? Like are you a complete beginner and this is your first interaction with coding or do you have some experience already? If you are a complete beginner I would say try to learn the basics of coding and OOP (object oriented programming) first because python is an OOP language. For example some pointers, what is a variable and what variable types do exist, what is an object, what is a class, what is a function, what does OOP mean, how can you use classes and functions and stuff like that. If you already have some coding experience what other help with code do you need?
For ideas I am happy to talk/brainstorm and help you get ideas or solve creative blockades if you have any. It is still YOUR project though and therefore I don't just want to say "Do X and Y" but rather help you come up with your own ideas and make the game that you want to make you know? According to the discord votes it seems the theme will be "broken world" so what comes to mind? What type of game do you think of when you hear that? Maybe a platformer with a broken world where you have to jump around broken platforms, an RPG where the world is destroyed after some catastrophe, or a racing game where you have to outrun the destruction of world? Think about what the general idea and direction should be first and then you can think about the details later. Do try to think simple though as this is your first game jam you will probably need longer to do basic things since it is your first time plus 2-3 days is not that much time so if you can try as simple as possible, do a base game first and then if you have time you can still implement expansions (like new features, more level, nicer graphics/design etc.)
Do you have anything specific you need help with? If it's not obvious yet I am happy to help! :3