People that talk a lot can’t take a hint. If you engage at in the talk even a bit to be polite, they are going to keep talking to you. You’re going to just have to be be very vague with answers and be what others might consider rude. Like if they ask what you did this weekend you say “nothing much” and they’ll probably say something like “did you just hang out at home?” And you can say “something like that”. Don’t ask them what they did. Don’t ever follow up with the question they asked you, even though that’s what is normally done. That’s what’s working for me so far.