Like the other doctrines I made up, which include parousial sanctification and practical universalism, the doctrine of proportional atonement is widely believed by Christians but not officially recognized by Christian theologians.
This doctrine states that Jesus suffered horribly on the cross for the sins of other people. He didn’t need to suffer so horribly for my sins, because my sins aren’t so horrible. For me, he only needed to suffer mild discomfort.
Probably that means that, for him, I only need to suffer mild discomfort. I hope so.