I'm such a completionist that side quests can be a curse for me. It's my own fault. I'll really need to figure that out before this game, I'm a bit scared that main plot points are tied up to the side quests though
They are tied to more important side quest like you will have dialogue and you will see the story progress you don't have to complete every single collect-a-thon quest.
I myself think I will collect all I can while out adventuring, complete all story side quest and I'll just accept and instantly turn all the collectible quests when I have all the items needed. The method I'm aiming to do would probably works great for you as well.