Did I go too far?

Hey guys. I just got the paraglider and the next mission that lit up for me is at the castle.

It’s way too hard over here and there are these little frozen stone dudes that keep freezing me. There are also these purple laser eye things that attack me whenever I try to leave. I see a cart that I think I’m supposed to magnet backwards to the top of the track to enter the castle?

I’m stuck. Where should I go back to or was I right to come here?

Playing S2 edition with Z-Notes if that helps to guide me. Thanks.