Should I keep going?

I’m on chapter 38 of Queen Of Shadows and…I’m just not enjoying it. I’m having a tough time caring and liking the characters. I really enjoyed Heir of Fire. Is this something other people have experienced and I should push through? Or am I crazy and maybe this series just isn’t for me?

Edit: Thanks for the feedback everyone! I think I will attempt a few more chapters (actually reading instead of the audiobook) and see how that treats me. I appreciate your input!