Witcher 3 experience when everything is grayed out

I'm level 26. I'm playing until around level 29 before starting the Isle Of Mist and finish the game.

All quests except two are grayed because they are for level below 15.

The two quests above 26 are for level 30 to 33.

Where am I suppose to get experience to level up if there are no quests to be done?

I think I won't gain level fast enough by killing small monsters in the forest.

Is there a better way to level up without quests?

Solution 1:

So you mentioned quests. When I was playing Witcher 3 I was higher leveled than that for the Isle Of Mist. And I didn't do all the contracts or treasure hunts.

So basically do more contracts, do more treasure hunts and explore the "question marks" on the map.

You will get a lot of experience from these things.

EDIT: Do the grayed out missions anyway and get some XP.

If you want to be sneaky beaky and get XP on demand you can add the Dev Commands Mod (here)

But if I were I would leave that as ultimate last resort

Solution 2:

The reason for this is that you're already overleveled for that particular main quest. The Isle of Mists is a level 22 quest, you're not really supposed to get to level 29 before doing it. I'm just about to do this quest in my second playthrough now, and I'm at the end of level 24. I skipped a few side quests, but not many.

One way the game tries to prevent players from overleveling by doing all the side quests is that the amount of XP you get from main quests is drastically higher than the XP you get from side quests. This makes a huge difference, and your level is mostly determined by how many main quests you already did, and not so much by the side quests.

The Isle of Mists is also not the end of the game, I won't spoiler anything here, but I'd suggest to stop worrying and just doing this quest. There's still plenty of game afterwards.