Did I go about this game wrong?

So I'm the kinda player who likes to do all available side quests as I play the main story. Once I made it to Velen it seemed like they just kept on coming non stop so I kept on doing them.

I'm now level 26 and just a level ago first went to skellige. All the main quests line missions are level 16 while I'm almost 10 levels ahead.

I was afraid if I went to far along the story I would miss some quests but here I am 60 hours in lol and just now getting to what I feel like is the good part.

Has this happened to anyone else?