No you don’t need to go back. IMO the main quest, or at least the way it is delivered is not great anyway. It’s mostly a way to send you around the map to naturally bump into other quests and activities.
To ELI5 the story:
Tap for spoiler
Dragons are getting revived. You are the only one who can make them die forever. Find the Big Bad Guy who is reviving the dragons and stop him.
No you don’t need to go back. IMO the main quest, or at least the way it is delivered is not great anyway. It’s mostly a way to send you around the map to naturally bump into other quests and activities. To ELI5 the story:
Tap for spoiler
Dragons are getting revived. You are the only one who can make them die forever. Find the Big Bad Guy who is reviving the dragons and stop him.