One option is to have Hiccup use his own inner strength and determination to overcome the burns. You could describe his journey of self-healing and how it makes him stronger. Another approach could be having a wise elder or a hidden healer in the story who has the knowledge and skills to treat his burns.
You could have other characters come to his rescue and help him recover.
Maybe introduce a magical element that could heal Hiccup's burns quickly. It could add an interesting twist to the story. Also, you could explore how Hiccup's personality changes due to this trauma and how it affects his relationships with others.
This is a tricky one. Maybe the other characters could come to Hiccup's aid and help him break free. Or it could be a journey of self-discovery for Hiccup while in that situation.
First, you could have the other characters in the story come up with a rescue plan. They might use their skills and knowledge to track down where Hiccup is being held and figure out how to get in safely.
I think you could focus on Hiccup's growth and transformation after the betrayal. Maybe he becomes stronger or learns valuable lessons. Also, you could have him seek revenge or find a way to forgive and reconcile.
One way could be to focus on the confusion and adjustments the characters have to make. It can add a lot of drama and humor.
First off, you might introduce a wise healer character who knows the remedy. Or, you could have Hiccup's friends embark on a dangerous quest to find the cure. Another option is to have Hiccup's inner strength and determination help him fight off the poison gradually.
Maybe Hiccup could learn some self-defense skills and stand up for himself. Or, he could find an adult he trusts to help him solve the problem. It all depends on how the story unfolds and what kind of tone you want to set.
Well, you might consider having other characters give him warm clothing or blankets. Or perhaps he could use his inventing skills to create a device that generates heat. Maybe there's a hot spring nearby that he finds and takes advantage of.
You could have other characters try to wake him up with various methods, like using magic or seeking help from a wise elder.
You might make the illness a metaphor for a larger challenge Hiccup needs to overcome within himself. It could lead to personal growth and a deeper understanding of his role in the dragon world.
One way could be to introduce a magical cure or an event that breaks the brainwashing. Maybe a key moment from Hiccup's past triggers his return to normal. Also, the support of his dragon could play a crucial role in restoring his mind.