I really like these on you, for a slouchy look. And I can relate. One of my favorite pair of jeans now was, when I bought them several years ago, final sale and much larger than I thought they'd be. After doing the hot water and dryer as others here suggested, I just started wearing them anyway, with a leather tie belt. It was kind of fun to have a different fit. And due to an increase in size as I'm aging, they fit much better now.
I'd also suggest another roll on yours, to take the length up a little, but I tend to like shorter pants. I think it can be flattering to see more shoe or ankle. And the more cropped length balances out the volume, at least from how it feels to wear some bigger pants.
I've recently learned a new way to roll my very long jeans, which is to turn up a very big cuff and then turn up that one again at the halfway point so it just comes up under the hem of the first, so the stitching of the hem is still nicely visible (as opposed to double rolling that hides the hem stitching) It's less bulky and stays in place better. Maybe everyone knows this but it was new to me! I saw it on instagram on some die hard "denim dudes" :). Good luck.