Drafts issue?!

I need help regarding my drafts “Last edited” date and hour. I have a huge amount of drafts and in rereading them they autosaved and changed order. It is very important for me to have them in the same order as before. Is there an undo, or at least a way to modify the ‘Last edited” date? I need a solution that can work in wordpress since my cpanel is not administered by me.

So…how do I change the Last edited date of a draft?

Thank you in advance and please help!!!