Opening 1.15.2 World In 1.12.2?

[jediffner 0]

So I got forge and world edit a while ago and not realizing that there are a lot of mods that are still only in 1.12.2 I got both forge and world edit in 1.15.2. Of course this would not normally be an issue since I could just download both of those in an earlier version if needed however I began a build using world edit in 1.15.2. So the problem arises when I decide that I want to integrate chisels and bits into the build, which of course is only in 1.12.2. I've been trying to find some way to open the world or transfer the build over to that version but it seems there is just no way. But if there is any way at all I would love to know. And no I cant rebuild it in 1.12.2. It is already way to massive and way to many hours of work. Yea its my fault for getting that far before I decided I wanted chisels and bits and not starting it in 1.12 but its to late so if there is any way to transfer it over I would love to know. Thanks.