Need help motivating myself to finish please (no spoilers from moonrise towers onwards)

I'm 130hrs in but I'm still pre-Moonrise Towers, currently wandering around a poisonous bog of some sort, so no spoilers please

I'm finding the game repetitive and I think it's my own fault? Am I taking the game way too slowly by following every narrative thread and opening every crate etc?

Should I skip some narrative beats?

Should I change my team's subclasses to mix up combat?

Any advice appreciated