I don't think it's worth watching, no. However, if you're already mostly through season 2 then I guess might as well if you really wanna see some shoddy work. If you're not interested in reading the manga or don't have time right now, go on and finish the anime just to feel like you have some sort of baseline I guess? Otherwise, drop it and use that time to read the manga. If you don't want to revisit what was covered in the first season start at chapter 38.
Then sit and realize there are 181 chapters. And season 1 was 38 of them. Then despair at what season 2 was.
Or not, just enjoy the manga. It has its flaws and I can see how they'd want to rework the story a bit to flow better but that's not at all what they accomplished
I won't post the actual tweet because it does contain a spoiler image for the last ep but the text from it is my fav summation of this: "congratulations to the promised neverland for being the only anime to condense an entire story arc into A STILL IMAGE"