Tiffany has a lot of different backings that you can adjust. They can modify the earrings to have clip backs, squeeze backs, push backs, screw backs, etc. There’s also apparently an extra large squeeze back for people who have droopy ear holes who want to wear oversized studs.
You can also modify the length of the earring posts to be shorter, if you find that they hit things. And also modify the earring posts to be a little bit thicker or thinner for comfort, from what I know.
If you want even more security, Tiffany sells these silicone backings that you can put over the post as an extra security. Then you can put a squeeze back and then double it with a silicone back, which would also help prevent bending of the posts if they hit things.