Dune Messiah

I've not read the entire books series of Dune, I read the first two, however it was so long ago that I don't remember much of anything from the second book and forgot much of the first, the rest of the series wasnt available in my town where I'm from. Anyway, I wasnt a big fan of the first Villeneuve Dune movie when it came out a few years ago, but this second movie just knocked my socks off, so I wanted to know, as Villeneuve said he would want to do an adaptation of Dune Messiah, is just one more movie enough to satisfy the story? What I do remember is Dune Messiah was very short, so much so that I read it within a week or two, moved onto some other book, and promptly forgot about it, which caused me not to really think much about it after that (I was a kid, so I'm saying it's not that the book was bad, I just had a shitty attention span and caring capacity, and I was reading tons of books). Well, it seems impossible to me that such a short book captures enough of a Great Holy War that it'd close the series satisfyingly, but he says he doesnt want to do more than that, and given the type of artist he is, I wouldnt expect him to do a 3rd movie if it wasnt going to give some sort of closure. This 2nd movie was amazing, but its ending can also serve as like an open ended one if it didnt get a 3rd movie, and again I doubt he'd have not left it there if it wouodnt have worked as a 3rd. But I wanted the fandom's opinion on whether this is enough or whether the series 100% needs to adapt the 3rd - 6th books otherwise the story isnt gonna be satisfying?