I love the art style and the music was a great fit too. This is really well polished for a jam game. The only nitpick I have there is that the explanation on how to play is a wall of text, but I don't think it's a big deal. An interactive tutorial would be amazing, but who has time for that, right?
Maybe I'm just not great at this type of game, but I didn't find myself reversing the conveyor belt very often and when I did try, I died almost immediately after. Maybe you could code it in such a way that some good opportunities to reverse the conveyor belt pop up early on when the cakes are still moving quite slowly and are further apart. I also think it might be an issue that you can't see what's coming from the right, it makes you feel like the right cake might be right around the corner and hesitant to reverse when the cakes are coming from the right. If I knew the cake wasn't coming any time soon, I'd be much more likely to use the space bar.