Am I alone in this?

I’m about 80% through Kingdom of Ash and it’s honestly been a struggle. I was so excited to read the final book because i’ve seen so many reviews saying it’s the best in the series and amazing and heartbreaking. Problem is i’ve started it all the way back in March and i’m still not done, i think i’ve already read about 4 books in between because it’s just not sucking me in like the rest of the series has. I absolutely love the other books and was invested in almost all of them , but KoA just isn’t as earth shattering as I expected it to be? It feels like it’s never gonna end and just isn’t giving me the rush that the other books gave. Maybe because the characters are all separated for so much of the book? Did anyone else feel this way? I feel like a fraud now for not enjoying the book that everyone agrees is the best 😭