here you guys go:
https://www.looper.com/13814/forrest-gump-2-never-got-made/
some of what it says on hanks:
Tom Hanks famously eschewed sequels until Pixar backed a dumptruck of cash into his driveway and persuaded him to return for Toy Story 2. But in the case of Forrest Gump, Hanks claims he never considered a sequel for a second. Not for Jenn-ay, or a hot new pair of Nikes, or all the boxes of chocolates in the world. He even went so far as to tell Entertainment Weekly that Forrest's famous catchphrase "'Stupid is' makes me kind of sick," and that a sequel would "ruin what we had done." That's bridge-burning language if there ever was any.
But none of this is to say Hanks dislikes the film or has any regrets as it did, after all, earn him the second of his back-to-back Best Actor Oscar Awards. In his Reddit AMA, he described how he was brought to tears during the scene where Lt. Dan walks on his prosthetic legs, and he was so fired up about the script, he described himself as "absolutely bent" after reading it, according to Turner Classic Movies. So, his 'hard no' towards a sequel seems to be entirely hinged on an effort to leave well enough alone, which is a lesson many Hollywood executives—particularly anyone involved with Blues Brothers 2000—could stand to learn.
When I tell the truth, it is not for the sake of convincing those who do not know it, but for the sake of defending those that do.
William Blake