Reading the Manga is so long. I actually started losing interest more. If you are up for it, you should read. Filler's are in the Anime, I assume. One of the reasons why I read the Manga. Besides, Anime get things wrong.
You should read the manga after you have caught up with the anime
Then enjoy each episode knowing what is going to happen but even then you get excited to see certain new characters in colour and how they sound. You know? xd