When the jam theme is announced spend about 30 minutes to 1 hour (or 2 hours) thinking about how you can incorporate the theme into your game. Make sure you have plenty of time to work on the game throughout the week, and be sure to leave at least 1-2 days to submit the game to Itch so you not rushed. If you need any more advice i'm glad to help :)
p.s. I also use Godot "GO GODOT!"