Should i keep reading TKO?

I’ve already read and watched the whole trilogy and loved it. Recently got the full set with 5 books. I’ve been reading TKO but however, it didn’t really capture my attention like the other books did. I’ve been pushing and trying to finish it but I keep finding myself reading other books. I’ve been reading this book for about a month now (borrowed it from my school library) which is really long compared to how long I took to read the others (2-3 days). I think the main reason why I didn’t really like TKO was bc the lack of main characters (aside from someone ifykyk)

And I was wondering, is there something REALLY important included in the TKO that I should know before moving on to TFC. Bc I really really want to read TFC but don’t want to miss any details that happened in the TKO.